diff --git a/gdk4-wayland/src/auto/versions.txt b/gdk4-wayland/src/auto/versions.txt
index f8c9324cb5db..0a416aa18620 100644
--- a/gdk4-wayland/src/auto/versions.txt
+++ b/gdk4-wayland/src/auto/versions.txt
@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ a11b11f2e403)
+Generated by gir (https://github.com/gtk-rs/gir @ eff839d4745d)
 from gir-files (https://github.com/gtk-rs/gir-files @ 62da9eb7c4bd)
diff --git a/gdk4-wayland/sys/versions.txt b/gdk4-wayland/sys/versions.txt
index f8c9324cb5db..0a416aa18620 100644
--- a/gdk4-wayland/sys/versions.txt
+++ b/gdk4-wayland/sys/versions.txt
@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ a11b11f2e403)
+Generated by gir (https://github.com/gtk-rs/gir @ eff839d4745d)
 from gir-files (https://github.com/gtk-rs/gir-files @ 62da9eb7c4bd)
diff --git a/gdk4-win32/src/auto/versions.txt b/gdk4-win32/src/auto/versions.txt
index f8c9324cb5db..0a416aa18620 100644
--- a/gdk4-win32/src/auto/versions.txt
+++ b/gdk4-win32/src/auto/versions.txt
@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ a11b11f2e403)
+Generated by gir (https://github.com/gtk-rs/gir @ eff839d4745d)
 from gir-files (https://github.com/gtk-rs/gir-files @ 62da9eb7c4bd)
diff --git a/gdk4-win32/sys/versions.txt b/gdk4-win32/sys/versions.txt
index f8c9324cb5db..0a416aa18620 100644
--- a/gdk4-win32/sys/versions.txt
+++ b/gdk4-win32/sys/versions.txt
@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ a11b11f2e403)
+Generated by gir (https://github.com/gtk-rs/gir @ eff839d4745d)
 from gir-files (https://github.com/gtk-rs/gir-files @ 62da9eb7c4bd)
diff --git a/gdk4-x11/src/auto/versions.txt b/gdk4-x11/src/auto/versions.txt
index f8c9324cb5db..0a416aa18620 100644
--- a/gdk4-x11/src/auto/versions.txt
+++ b/gdk4-x11/src/auto/versions.txt
@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ a11b11f2e403)
+Generated by gir (https://github.com/gtk-rs/gir @ eff839d4745d)
 from gir-files (https://github.com/gtk-rs/gir-files @ 62da9eb7c4bd)
diff --git a/gdk4-x11/sys/versions.txt b/gdk4-x11/sys/versions.txt
index f8c9324cb5db..0a416aa18620 100644
--- a/gdk4-x11/sys/versions.txt
+++ b/gdk4-x11/sys/versions.txt
@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ a11b11f2e403)
+Generated by gir (https://github.com/gtk-rs/gir @ eff839d4745d)
 from gir-files (https://github.com/gtk-rs/gir-files @ 62da9eb7c4bd)
diff --git a/gdk4/src/auto/app_launch_context.rs b/gdk4/src/auto/app_launch_context.rs
index 3f1414fadfa7..c3c18a945158 100644
--- a/gdk4/src/auto/app_launch_context.rs
+++ b/gdk4/src/auto/app_launch_context.rs
@@ -18,12 +18,7 @@ impl AppLaunchContext {
     pub const NONE: Option<&'static AppLaunchContext> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::AppLaunchContext>> Sealed for T {}
-}
-
-pub trait GdkAppLaunchContextExt: IsA<AppLaunchContext> + sealed::Sealed + 'static {
+pub trait GdkAppLaunchContextExt: IsA<AppLaunchContext> + 'static {
     #[doc(alias = "gdk_app_launch_context_get_display")]
     #[doc(alias = "get_display")]
     fn display(&self) -> Display {
diff --git a/gdk4/src/auto/content_provider.rs b/gdk4/src/auto/content_provider.rs
index 15b6ddac6f32..bea48c3f8af7 100644
--- a/gdk4/src/auto/content_provider.rs
+++ b/gdk4/src/auto/content_provider.rs
@@ -58,12 +58,7 @@ impl ContentProvider {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::ContentProvider>> Sealed for T {}
-}
-
-pub trait ContentProviderExt: IsA<ContentProvider> + sealed::Sealed + 'static {
+pub trait ContentProviderExt: IsA<ContentProvider> + 'static {
     #[doc(alias = "gdk_content_provider_content_changed")]
     fn content_changed(&self) {
         unsafe {
diff --git a/gdk4/src/auto/device.rs b/gdk4/src/auto/device.rs
index 801af520cf5d..ef71d92f8c8c 100644
--- a/gdk4/src/auto/device.rs
+++ b/gdk4/src/auto/device.rs
@@ -30,12 +30,7 @@ impl std::fmt::Display for Device {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Device>> Sealed for T {}
-}
-
-pub trait DeviceExt: IsA<Device> + sealed::Sealed + 'static {
+pub trait DeviceExt: IsA<Device> + 'static {
     #[doc(alias = "gdk_device_get_caps_lock_state")]
     #[doc(alias = "get_caps_lock_state")]
     #[doc(alias = "caps-lock-state")]
diff --git a/gdk4/src/auto/device_pad.rs b/gdk4/src/auto/device_pad.rs
index aa3d1f82bc34..d8fc78b1d54f 100644
--- a/gdk4/src/auto/device_pad.rs
+++ b/gdk4/src/auto/device_pad.rs
@@ -18,12 +18,7 @@ impl DevicePad {
     pub const NONE: Option<&'static DevicePad> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::DevicePad>> Sealed for T {}
-}
-
-pub trait DevicePadExt: IsA<DevicePad> + sealed::Sealed + 'static {
+pub trait DevicePadExt: IsA<DevicePad> + 'static {
     #[doc(alias = "gdk_device_pad_get_feature_group")]
     #[doc(alias = "get_feature_group")]
     fn feature_group(&self, feature: DevicePadFeature, feature_idx: i32) -> i32 {
diff --git a/gdk4/src/auto/display.rs b/gdk4/src/auto/display.rs
index 7cbc73e3ff92..3e165b9e25f4 100644
--- a/gdk4/src/auto/display.rs
+++ b/gdk4/src/auto/display.rs
@@ -51,12 +51,7 @@ impl std::fmt::Display for Display {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Display>> Sealed for T {}
-}
-
-pub trait DisplayExt: IsA<Display> + sealed::Sealed + 'static {
+pub trait DisplayExt: IsA<Display> + 'static {
     #[doc(alias = "gdk_display_beep")]
     fn beep(&self) {
         unsafe {
diff --git a/gdk4/src/auto/drag.rs b/gdk4/src/auto/drag.rs
index 5a56e9f51678..d003ec28bd05 100644
--- a/gdk4/src/auto/drag.rs
+++ b/gdk4/src/auto/drag.rs
@@ -47,12 +47,7 @@ impl Drag {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Drag>> Sealed for T {}
-}
-
-pub trait DragExt: IsA<Drag> + sealed::Sealed + 'static {
+pub trait DragExt: IsA<Drag> + 'static {
     #[doc(alias = "gdk_drag_drop_done")]
     fn drop_done(&self, success: bool) {
         unsafe {
diff --git a/gdk4/src/auto/drag_surface.rs b/gdk4/src/auto/drag_surface.rs
index 51097bd3be91..4edbc5738a74 100644
--- a/gdk4/src/auto/drag_surface.rs
+++ b/gdk4/src/auto/drag_surface.rs
@@ -18,12 +18,7 @@ impl DragSurface {
     pub const NONE: Option<&'static DragSurface> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::DragSurface>> Sealed for T {}
-}
-
-pub trait DragSurfaceExt: IsA<DragSurface> + sealed::Sealed + 'static {
+pub trait DragSurfaceExt: IsA<DragSurface> + 'static {
     #[doc(alias = "gdk_drag_surface_present")]
     fn present(&self, width: i32, height: i32) -> bool {
         unsafe {
diff --git a/gdk4/src/auto/draw_context.rs b/gdk4/src/auto/draw_context.rs
index 8bdf901dcd53..d4bfb8ea214b 100644
--- a/gdk4/src/auto/draw_context.rs
+++ b/gdk4/src/auto/draw_context.rs
@@ -18,12 +18,7 @@ impl DrawContext {
     pub const NONE: Option<&'static DrawContext> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::DrawContext>> Sealed for T {}
-}
-
-pub trait DrawContextExt: IsA<DrawContext> + sealed::Sealed + 'static {
+pub trait DrawContextExt: IsA<DrawContext> + 'static {
     #[doc(alias = "gdk_draw_context_begin_frame")]
     fn begin_frame(&self, region: &cairo::Region) {
         unsafe {
diff --git a/gdk4/src/auto/gl_context.rs b/gdk4/src/auto/gl_context.rs
index 4851b72983fd..7337fdc51ef5 100644
--- a/gdk4/src/auto/gl_context.rs
+++ b/gdk4/src/auto/gl_context.rs
@@ -43,12 +43,7 @@ impl GLContext {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::GLContext>> Sealed for T {}
-}
-
-pub trait GLContextExt: IsA<GLContext> + sealed::Sealed + 'static {
+pub trait GLContextExt: IsA<GLContext> + 'static {
     #[cfg(feature = "v4_6")]
     #[cfg_attr(docsrs, doc(cfg(feature = "v4_6")))]
     #[doc(alias = "gdk_gl_context_get_allowed_apis")]
diff --git a/gdk4/src/auto/monitor.rs b/gdk4/src/auto/monitor.rs
index f25a2e562498..bf0d16447751 100644
--- a/gdk4/src/auto/monitor.rs
+++ b/gdk4/src/auto/monitor.rs
@@ -23,12 +23,7 @@ impl Monitor {
     pub const NONE: Option<&'static Monitor> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Monitor>> Sealed for T {}
-}
-
-pub trait MonitorExt: IsA<Monitor> + sealed::Sealed + 'static {
+pub trait MonitorExt: IsA<Monitor> + 'static {
     #[doc(alias = "gdk_monitor_get_connector")]
     #[doc(alias = "get_connector")]
     fn connector(&self) -> Option<glib::GString> {
diff --git a/gdk4/src/auto/paintable.rs b/gdk4/src/auto/paintable.rs
index e36d2fc7ef24..04f4a43dc02f 100644
--- a/gdk4/src/auto/paintable.rs
+++ b/gdk4/src/auto/paintable.rs
@@ -34,12 +34,7 @@ impl Paintable {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Paintable>> Sealed for T {}
-}
-
-pub trait PaintableExt: IsA<Paintable> + sealed::Sealed + 'static {
+pub trait PaintableExt: IsA<Paintable> + 'static {
     #[doc(alias = "gdk_paintable_compute_concrete_size")]
     fn compute_concrete_size(
         &self,
diff --git a/gdk4/src/auto/popup.rs b/gdk4/src/auto/popup.rs
index 55a86763f5b2..626bb7281297 100644
--- a/gdk4/src/auto/popup.rs
+++ b/gdk4/src/auto/popup.rs
@@ -18,12 +18,7 @@ impl Popup {
     pub const NONE: Option<&'static Popup> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Popup>> Sealed for T {}
-}
-
-pub trait PopupExt: IsA<Popup> + sealed::Sealed + 'static {
+pub trait PopupExt: IsA<Popup> + 'static {
     #[doc(alias = "gdk_popup_get_autohide")]
     #[doc(alias = "get_autohide")]
     #[doc(alias = "autohide")]
diff --git a/gdk4/src/auto/seat.rs b/gdk4/src/auto/seat.rs
index eb55df9ec4b7..02f29335687d 100644
--- a/gdk4/src/auto/seat.rs
+++ b/gdk4/src/auto/seat.rs
@@ -23,12 +23,7 @@ impl Seat {
     pub const NONE: Option<&'static Seat> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Seat>> Sealed for T {}
-}
-
-pub trait SeatExt: IsA<Seat> + sealed::Sealed + 'static {
+pub trait SeatExt: IsA<Seat> + 'static {
     #[doc(alias = "gdk_seat_get_capabilities")]
     #[doc(alias = "get_capabilities")]
     fn capabilities(&self) -> SeatCapabilities {
diff --git a/gdk4/src/auto/surface.rs b/gdk4/src/auto/surface.rs
index dcc18c5d2858..3a30fe6cba73 100644
--- a/gdk4/src/auto/surface.rs
+++ b/gdk4/src/auto/surface.rs
@@ -48,12 +48,7 @@ impl Surface {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Surface>> Sealed for T {}
-}
-
-pub trait SurfaceExt: IsA<Surface> + sealed::Sealed + 'static {
+pub trait SurfaceExt: IsA<Surface> + 'static {
     #[doc(alias = "gdk_surface_beep")]
     fn beep(&self) {
         unsafe {
diff --git a/gdk4/src/auto/texture.rs b/gdk4/src/auto/texture.rs
index 7ddd9db55a5c..d0d5880a1446 100644
--- a/gdk4/src/auto/texture.rs
+++ b/gdk4/src/auto/texture.rs
@@ -92,12 +92,7 @@ impl Texture {
 unsafe impl Send for Texture {}
 unsafe impl Sync for Texture {}
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Texture>> Sealed for T {}
-}
-
-pub trait TextureExt: IsA<Texture> + sealed::Sealed + 'static {
+pub trait TextureExt: IsA<Texture> + 'static {
     #[cfg(feature = "v4_10")]
     #[cfg_attr(docsrs, doc(cfg(feature = "v4_10")))]
     #[doc(alias = "gdk_texture_get_format")]
diff --git a/gdk4/src/auto/toplevel.rs b/gdk4/src/auto/toplevel.rs
index 033b73d58239..2e418a207652 100644
--- a/gdk4/src/auto/toplevel.rs
+++ b/gdk4/src/auto/toplevel.rs
@@ -29,12 +29,7 @@ impl Toplevel {
     pub const NONE: Option<&'static Toplevel> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Toplevel>> Sealed for T {}
-}
-
-pub trait ToplevelExt: IsA<Toplevel> + sealed::Sealed + 'static {
+pub trait ToplevelExt: IsA<Toplevel> + 'static {
     #[doc(alias = "gdk_toplevel_begin_move")]
     fn begin_move(&self, device: &impl IsA<Device>, button: i32, x: f64, y: f64, timestamp: u32) {
         unsafe {
diff --git a/gdk4/src/auto/versions.txt b/gdk4/src/auto/versions.txt
index f8c9324cb5db..0a416aa18620 100644
--- a/gdk4/src/auto/versions.txt
+++ b/gdk4/src/auto/versions.txt
@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ a11b11f2e403)
+Generated by gir (https://github.com/gtk-rs/gir @ eff839d4745d)
 from gir-files (https://github.com/gtk-rs/gir-files @ 62da9eb7c4bd)
diff --git a/gdk4/sys/versions.txt b/gdk4/sys/versions.txt
index f8c9324cb5db..0a416aa18620 100644
--- a/gdk4/sys/versions.txt
+++ b/gdk4/sys/versions.txt
@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ a11b11f2e403)
+Generated by gir (https://github.com/gtk-rs/gir @ eff839d4745d)
 from gir-files (https://github.com/gtk-rs/gir-files @ 62da9eb7c4bd)
diff --git a/gsk4/src/auto/renderer.rs b/gsk4/src/auto/renderer.rs
index ea9d7d2f76f7..7025bdfea9a9 100644
--- a/gsk4/src/auto/renderer.rs
+++ b/gsk4/src/auto/renderer.rs
@@ -30,12 +30,7 @@ impl Renderer {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Renderer>> Sealed for T {}
-}
-
-pub trait GskRendererExt: IsA<Renderer> + sealed::Sealed + 'static {
+pub trait GskRendererExt: IsA<Renderer> + 'static {
     #[doc(alias = "gsk_renderer_get_surface")]
     #[doc(alias = "get_surface")]
     fn surface(&self) -> Option<gdk::Surface> {
diff --git a/gsk4/src/auto/versions.txt b/gsk4/src/auto/versions.txt
index f8c9324cb5db..0a416aa18620 100644
--- a/gsk4/src/auto/versions.txt
+++ b/gsk4/src/auto/versions.txt
@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ a11b11f2e403)
+Generated by gir (https://github.com/gtk-rs/gir @ eff839d4745d)
 from gir-files (https://github.com/gtk-rs/gir-files @ 62da9eb7c4bd)
diff --git a/gsk4/sys/versions.txt b/gsk4/sys/versions.txt
index f8c9324cb5db..0a416aa18620 100644
--- a/gsk4/sys/versions.txt
+++ b/gsk4/sys/versions.txt
@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ a11b11f2e403)
+Generated by gir (https://github.com/gtk-rs/gir @ eff839d4745d)
 from gir-files (https://github.com/gtk-rs/gir-files @ 62da9eb7c4bd)
diff --git a/gtk4/src/auto/accessible.rs b/gtk4/src/auto/accessible.rs
index f2c4bd93f1f0..8b971495683d 100644
--- a/gtk4/src/auto/accessible.rs
+++ b/gtk4/src/auto/accessible.rs
@@ -29,12 +29,7 @@ impl Accessible {
     pub const NONE: Option<&'static Accessible> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Accessible>> Sealed for T {}
-}
-
-pub trait AccessibleExt: IsA<Accessible> + sealed::Sealed + 'static {
+pub trait AccessibleExt: IsA<Accessible> + 'static {
     #[cfg(feature = "v4_14")]
     #[cfg_attr(docsrs, doc(cfg(feature = "v4_14")))]
     #[doc(alias = "gtk_accessible_announce")]
diff --git a/gtk4/src/auto/accessible_range.rs b/gtk4/src/auto/accessible_range.rs
index bd1afac158b1..c371bddf8396 100644
--- a/gtk4/src/auto/accessible_range.rs
+++ b/gtk4/src/auto/accessible_range.rs
@@ -18,11 +18,6 @@ impl AccessibleRange {
     pub const NONE: Option<&'static AccessibleRange> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::AccessibleRange>> Sealed for T {}
-}
-
-pub trait AccessibleRangeExt: IsA<AccessibleRange> + sealed::Sealed + 'static {}
+pub trait AccessibleRangeExt: IsA<AccessibleRange> + 'static {}
 
 impl<O: IsA<AccessibleRange>> AccessibleRangeExt for O {}
diff --git a/gtk4/src/auto/accessible_text.rs b/gtk4/src/auto/accessible_text.rs
index c7614d927723..ca3969f87686 100644
--- a/gtk4/src/auto/accessible_text.rs
+++ b/gtk4/src/auto/accessible_text.rs
@@ -18,12 +18,7 @@ impl AccessibleText {
     pub const NONE: Option<&'static AccessibleText> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::AccessibleText>> Sealed for T {}
-}
-
-pub trait AccessibleTextExt: IsA<AccessibleText> + sealed::Sealed + 'static {
+pub trait AccessibleTextExt: IsA<AccessibleText> + 'static {
     #[doc(alias = "gtk_accessible_text_update_caret_position")]
     fn update_caret_position(&self) {
         unsafe {
diff --git a/gtk4/src/auto/actionable.rs b/gtk4/src/auto/actionable.rs
index eaaa0c6892d6..b2848705be46 100644
--- a/gtk4/src/auto/actionable.rs
+++ b/gtk4/src/auto/actionable.rs
@@ -23,12 +23,7 @@ impl Actionable {
     pub const NONE: Option<&'static Actionable> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Actionable>> Sealed for T {}
-}
-
-pub trait ActionableExt: IsA<Actionable> + sealed::Sealed + 'static {
+pub trait ActionableExt: IsA<Actionable> + 'static {
     #[doc(alias = "gtk_actionable_get_action_name")]
     #[doc(alias = "get_action_name")]
     #[doc(alias = "action-name")]
diff --git a/gtk4/src/auto/adjustment.rs b/gtk4/src/auto/adjustment.rs
index 6130ed76a763..66a0a96126a0 100644
--- a/gtk4/src/auto/adjustment.rs
+++ b/gtk4/src/auto/adjustment.rs
@@ -119,12 +119,7 @@ impl AdjustmentBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Adjustment>> Sealed for T {}
-}
-
-pub trait AdjustmentExt: IsA<Adjustment> + sealed::Sealed + 'static {
+pub trait AdjustmentExt: IsA<Adjustment> + 'static {
     #[doc(alias = "gtk_adjustment_clamp_page")]
     fn clamp_page(&self, lower: f64, upper: f64) {
         unsafe {
diff --git a/gtk4/src/auto/app_chooser.rs b/gtk4/src/auto/app_chooser.rs
index c1da8ae02782..862bfa57a4d1 100644
--- a/gtk4/src/auto/app_chooser.rs
+++ b/gtk4/src/auto/app_chooser.rs
@@ -19,12 +19,7 @@ impl AppChooser {
     pub const NONE: Option<&'static AppChooser> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::AppChooser>> Sealed for T {}
-}
-
-pub trait AppChooserExt: IsA<AppChooser> + sealed::Sealed + 'static {
+pub trait AppChooserExt: IsA<AppChooser> + 'static {
     #[cfg_attr(feature = "v4_10", deprecated = "Since 4.10")]
     #[allow(deprecated)]
     #[doc(alias = "gtk_app_chooser_get_app_info")]
diff --git a/gtk4/src/auto/application.rs b/gtk4/src/auto/application.rs
index 2e4b80077610..5e58259f827d 100644
--- a/gtk4/src/auto/application.rs
+++ b/gtk4/src/auto/application.rs
@@ -109,12 +109,7 @@ impl ApplicationBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Application>> Sealed for T {}
-}
-
-pub trait GtkApplicationExt: IsA<Application> + sealed::Sealed + 'static {
+pub trait GtkApplicationExt: IsA<Application> + 'static {
     #[doc(alias = "gtk_application_add_window")]
     fn add_window(&self, window: &impl IsA<Window>) {
         unsafe {
diff --git a/gtk4/src/auto/application_window.rs b/gtk4/src/auto/application_window.rs
index 28cc73ccd067..122b8231b08a 100644
--- a/gtk4/src/auto/application_window.rs
+++ b/gtk4/src/auto/application_window.rs
@@ -421,12 +421,7 @@ impl ApplicationWindowBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::ApplicationWindow>> Sealed for T {}
-}
-
-pub trait ApplicationWindowExt: IsA<ApplicationWindow> + sealed::Sealed + 'static {
+pub trait ApplicationWindowExt: IsA<ApplicationWindow> + 'static {
     #[doc(alias = "gtk_application_window_get_help_overlay")]
     #[doc(alias = "get_help_overlay")]
     fn help_overlay(&self) -> Option<ShortcutsWindow> {
diff --git a/gtk4/src/auto/box_.rs b/gtk4/src/auto/box_.rs
index 178ae7d4e2f5..fcac20fd7145 100644
--- a/gtk4/src/auto/box_.rs
+++ b/gtk4/src/auto/box_.rs
@@ -290,12 +290,7 @@ impl BoxBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Box>> Sealed for T {}
-}
-
-pub trait BoxExt: IsA<Box> + sealed::Sealed + 'static {
+pub trait BoxExt: IsA<Box> + 'static {
     #[doc(alias = "gtk_box_append")]
     fn append(&self, child: &impl IsA<Widget>) {
         unsafe {
diff --git a/gtk4/src/auto/buildable.rs b/gtk4/src/auto/buildable.rs
index c30bc7f67554..4b3060a53d76 100644
--- a/gtk4/src/auto/buildable.rs
+++ b/gtk4/src/auto/buildable.rs
@@ -18,12 +18,7 @@ impl Buildable {
     pub const NONE: Option<&'static Buildable> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Buildable>> Sealed for T {}
-}
-
-pub trait BuildableExt: IsA<Buildable> + sealed::Sealed + 'static {
+pub trait BuildableExt: IsA<Buildable> + 'static {
     #[doc(alias = "gtk_buildable_get_buildable_id")]
     #[doc(alias = "get_buildable_id")]
     fn buildable_id(&self) -> Option<glib::GString> {
diff --git a/gtk4/src/auto/builder_scope.rs b/gtk4/src/auto/builder_scope.rs
index 6b6e8bbacd96..3c611b1a1f6a 100644
--- a/gtk4/src/auto/builder_scope.rs
+++ b/gtk4/src/auto/builder_scope.rs
@@ -18,11 +18,6 @@ impl BuilderScope {
     pub const NONE: Option<&'static BuilderScope> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::BuilderScope>> Sealed for T {}
-}
-
-pub trait BuilderScopeExt: IsA<BuilderScope> + sealed::Sealed + 'static {}
+pub trait BuilderScopeExt: IsA<BuilderScope> + 'static {}
 
 impl<O: IsA<BuilderScope>> BuilderScopeExt for O {}
diff --git a/gtk4/src/auto/button.rs b/gtk4/src/auto/button.rs
index 9e48632d209c..5f25ae8d8d94 100644
--- a/gtk4/src/auto/button.rs
+++ b/gtk4/src/auto/button.rs
@@ -338,12 +338,7 @@ impl ButtonBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Button>> Sealed for T {}
-}
-
-pub trait ButtonExt: IsA<Button> + sealed::Sealed + 'static {
+pub trait ButtonExt: IsA<Button> + 'static {
     #[cfg(feature = "v4_12")]
     #[cfg_attr(docsrs, doc(cfg(feature = "v4_12")))]
     #[doc(alias = "gtk_button_get_can_shrink")]
diff --git a/gtk4/src/auto/cell_area.rs b/gtk4/src/auto/cell_area.rs
index 441f1db4da9b..bae1dbb7fe77 100644
--- a/gtk4/src/auto/cell_area.rs
+++ b/gtk4/src/auto/cell_area.rs
@@ -27,12 +27,7 @@ impl CellArea {
     pub const NONE: Option<&'static CellArea> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::CellArea>> Sealed for T {}
-}
-
-pub trait CellAreaExt: IsA<CellArea> + sealed::Sealed + 'static {
+pub trait CellAreaExt: IsA<CellArea> + 'static {
     #[cfg_attr(feature = "v4_10", deprecated = "Since 4.10")]
     #[allow(deprecated)]
     #[doc(alias = "gtk_cell_area_activate")]
diff --git a/gtk4/src/auto/cell_area_context.rs b/gtk4/src/auto/cell_area_context.rs
index 6e671e96371e..cc62395d2174 100644
--- a/gtk4/src/auto/cell_area_context.rs
+++ b/gtk4/src/auto/cell_area_context.rs
@@ -24,12 +24,7 @@ impl CellAreaContext {
     pub const NONE: Option<&'static CellAreaContext> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::CellAreaContext>> Sealed for T {}
-}
-
-pub trait CellAreaContextExt: IsA<CellAreaContext> + sealed::Sealed + 'static {
+pub trait CellAreaContextExt: IsA<CellAreaContext> + 'static {
     #[cfg_attr(feature = "v4_10", deprecated = "Since 4.10")]
     #[allow(deprecated)]
     #[doc(alias = "gtk_cell_area_context_allocate")]
diff --git a/gtk4/src/auto/cell_editable.rs b/gtk4/src/auto/cell_editable.rs
index 24f9614a387c..224b571170c5 100644
--- a/gtk4/src/auto/cell_editable.rs
+++ b/gtk4/src/auto/cell_editable.rs
@@ -24,12 +24,7 @@ impl CellEditable {
     pub const NONE: Option<&'static CellEditable> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::CellEditable>> Sealed for T {}
-}
-
-pub trait CellEditableExt: IsA<CellEditable> + sealed::Sealed + 'static {
+pub trait CellEditableExt: IsA<CellEditable> + 'static {
     #[cfg_attr(feature = "v4_10", deprecated = "Since 4.10")]
     #[allow(deprecated)]
     #[doc(alias = "gtk_cell_editable_editing_done")]
diff --git a/gtk4/src/auto/cell_layout.rs b/gtk4/src/auto/cell_layout.rs
index b41c109077df..0415656b8472 100644
--- a/gtk4/src/auto/cell_layout.rs
+++ b/gtk4/src/auto/cell_layout.rs
@@ -20,12 +20,7 @@ impl CellLayout {
     pub const NONE: Option<&'static CellLayout> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::CellLayout>> Sealed for T {}
-}
-
-pub trait CellLayoutExt: IsA<CellLayout> + sealed::Sealed + 'static {
+pub trait CellLayoutExt: IsA<CellLayout> + 'static {
     #[cfg_attr(feature = "v4_10", deprecated = "Since 4.10")]
     #[allow(deprecated)]
     #[doc(alias = "gtk_cell_layout_add_attribute")]
diff --git a/gtk4/src/auto/cell_renderer.rs b/gtk4/src/auto/cell_renderer.rs
index 3c181053969e..aa9730dd9be7 100644
--- a/gtk4/src/auto/cell_renderer.rs
+++ b/gtk4/src/auto/cell_renderer.rs
@@ -27,12 +27,7 @@ impl CellRenderer {
     pub const NONE: Option<&'static CellRenderer> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::CellRenderer>> Sealed for T {}
-}
-
-pub trait CellRendererExt: IsA<CellRenderer> + sealed::Sealed + 'static {
+pub trait CellRendererExt: IsA<CellRenderer> + 'static {
     #[cfg_attr(feature = "v4_10", deprecated = "Since 4.10")]
     #[allow(deprecated)]
     #[doc(alias = "gtk_cell_renderer_activate")]
diff --git a/gtk4/src/auto/cell_renderer_text.rs b/gtk4/src/auto/cell_renderer_text.rs
index 880a5813a7e8..33c1e12344d8 100644
--- a/gtk4/src/auto/cell_renderer_text.rs
+++ b/gtk4/src/auto/cell_renderer_text.rs
@@ -442,12 +442,7 @@ impl CellRendererTextBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::CellRendererText>> Sealed for T {}
-}
-
-pub trait CellRendererTextExt: IsA<CellRendererText> + sealed::Sealed + 'static {
+pub trait CellRendererTextExt: IsA<CellRendererText> + 'static {
     #[cfg_attr(feature = "v4_10", deprecated = "Since 4.10")]
     #[allow(deprecated)]
     #[doc(alias = "gtk_cell_renderer_text_set_fixed_height_from_font")]
diff --git a/gtk4/src/auto/check_button.rs b/gtk4/src/auto/check_button.rs
index f0f32071735b..12b5f42bc13f 100644
--- a/gtk4/src/auto/check_button.rs
+++ b/gtk4/src/auto/check_button.rs
@@ -328,12 +328,7 @@ impl CheckButtonBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::CheckButton>> Sealed for T {}
-}
-
-pub trait CheckButtonExt: IsA<CheckButton> + sealed::Sealed + 'static {
+pub trait CheckButtonExt: IsA<CheckButton> + 'static {
     #[doc(alias = "gtk_check_button_get_active")]
     #[doc(alias = "get_active")]
     #[doc(alias = "active")]
diff --git a/gtk4/src/auto/color_chooser.rs b/gtk4/src/auto/color_chooser.rs
index 82d1dba68bc8..a4d83093315c 100644
--- a/gtk4/src/auto/color_chooser.rs
+++ b/gtk4/src/auto/color_chooser.rs
@@ -24,12 +24,7 @@ impl ColorChooser {
     pub const NONE: Option<&'static ColorChooser> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::ColorChooser>> Sealed for T {}
-}
-
-pub trait ColorChooserExt: IsA<ColorChooser> + sealed::Sealed + 'static {
+pub trait ColorChooserExt: IsA<ColorChooser> + 'static {
     #[cfg_attr(feature = "v4_10", deprecated = "Since 4.10")]
     #[allow(deprecated)]
     #[doc(alias = "gtk_color_chooser_get_rgba")]
diff --git a/gtk4/src/auto/combo_box.rs b/gtk4/src/auto/combo_box.rs
index d4924dfea77f..29b55accfccd 100644
--- a/gtk4/src/auto/combo_box.rs
+++ b/gtk4/src/auto/combo_box.rs
@@ -366,12 +366,7 @@ impl ComboBoxBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::ComboBox>> Sealed for T {}
-}
-
-pub trait ComboBoxExt: IsA<ComboBox> + sealed::Sealed + 'static {
+pub trait ComboBoxExt: IsA<ComboBox> + 'static {
     #[cfg_attr(feature = "v4_10", deprecated = "Since 4.10")]
     #[allow(deprecated)]
     #[doc(alias = "gtk_combo_box_get_active_id")]
diff --git a/gtk4/src/auto/constraint_target.rs b/gtk4/src/auto/constraint_target.rs
index e4f8afba90f2..6fc4454d76b5 100644
--- a/gtk4/src/auto/constraint_target.rs
+++ b/gtk4/src/auto/constraint_target.rs
@@ -18,11 +18,6 @@ impl ConstraintTarget {
     pub const NONE: Option<&'static ConstraintTarget> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::ConstraintTarget>> Sealed for T {}
-}
-
-pub trait ConstraintTargetExt: IsA<ConstraintTarget> + sealed::Sealed + 'static {}
+pub trait ConstraintTargetExt: IsA<ConstraintTarget> + 'static {}
 
 impl<O: IsA<ConstraintTarget>> ConstraintTargetExt for O {}
diff --git a/gtk4/src/auto/dialog.rs b/gtk4/src/auto/dialog.rs
index 8bd35fa3386f..5682401e54e2 100644
--- a/gtk4/src/auto/dialog.rs
+++ b/gtk4/src/auto/dialog.rs
@@ -421,12 +421,7 @@ impl DialogBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Dialog>> Sealed for T {}
-}
-
-pub trait DialogExt: IsA<Dialog> + sealed::Sealed + 'static {
+pub trait DialogExt: IsA<Dialog> + 'static {
     #[cfg_attr(feature = "v4_10", deprecated = "Since 4.10")]
     #[allow(deprecated)]
     #[doc(alias = "gtk_dialog_add_action_widget")]
diff --git a/gtk4/src/auto/drawing_area.rs b/gtk4/src/auto/drawing_area.rs
index 0f40e67523ad..a14f6036c26c 100644
--- a/gtk4/src/auto/drawing_area.rs
+++ b/gtk4/src/auto/drawing_area.rs
@@ -266,12 +266,7 @@ impl DrawingAreaBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::DrawingArea>> Sealed for T {}
-}
-
-pub trait DrawingAreaExt: IsA<DrawingArea> + sealed::Sealed + 'static {
+pub trait DrawingAreaExt: IsA<DrawingArea> + 'static {
     #[doc(alias = "gtk_drawing_area_get_content_height")]
     #[doc(alias = "get_content_height")]
     #[doc(alias = "content-height")]
diff --git a/gtk4/src/auto/editable.rs b/gtk4/src/auto/editable.rs
index cf29ca5cbf16..38c7ba9a929f 100644
--- a/gtk4/src/auto/editable.rs
+++ b/gtk4/src/auto/editable.rs
@@ -26,12 +26,7 @@ impl Editable {
     pub const NONE: Option<&'static Editable> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Editable>> Sealed for T {}
-}
-
-pub trait EditableExt: IsA<Editable> + sealed::Sealed + 'static {
+pub trait EditableExt: IsA<Editable> + 'static {
     #[cfg(feature = "v4_10")]
     #[cfg_attr(docsrs, doc(cfg(feature = "v4_10")))]
     #[doc(alias = "gtk_editable_delegate_get_accessible_platform_state")]
diff --git a/gtk4/src/auto/entry.rs b/gtk4/src/auto/entry.rs
index bd675a27a736..28b29dc34689 100644
--- a/gtk4/src/auto/entry.rs
+++ b/gtk4/src/auto/entry.rs
@@ -587,12 +587,7 @@ impl EntryBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Entry>> Sealed for T {}
-}
-
-pub trait EntryExt: IsA<Entry> + sealed::Sealed + 'static {
+pub trait EntryExt: IsA<Entry> + 'static {
     #[doc(alias = "gtk_entry_get_activates_default")]
     #[doc(alias = "get_activates_default")]
     #[doc(alias = "activates-default")]
diff --git a/gtk4/src/auto/entry_buffer.rs b/gtk4/src/auto/entry_buffer.rs
index 6aeff4180ba4..7cc461ace2d6 100644
--- a/gtk4/src/auto/entry_buffer.rs
+++ b/gtk4/src/auto/entry_buffer.rs
@@ -67,12 +67,7 @@ impl EntryBufferBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::EntryBuffer>> Sealed for T {}
-}
-
-pub trait EntryBufferExt: IsA<EntryBuffer> + sealed::Sealed + 'static {
+pub trait EntryBufferExt: IsA<EntryBuffer> + 'static {
     #[doc(alias = "gtk_entry_buffer_emit_deleted_text")]
     fn emit_deleted_text(&self, position: u32, n_chars: u32) {
         unsafe {
diff --git a/gtk4/src/auto/event_controller.rs b/gtk4/src/auto/event_controller.rs
index d3690ff08841..b47e115db1c0 100644
--- a/gtk4/src/auto/event_controller.rs
+++ b/gtk4/src/auto/event_controller.rs
@@ -23,12 +23,7 @@ impl EventController {
     pub const NONE: Option<&'static EventController> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::EventController>> Sealed for T {}
-}
-
-pub trait EventControllerExt: IsA<EventController> + sealed::Sealed + 'static {
+pub trait EventControllerExt: IsA<EventController> + 'static {
     #[doc(alias = "gtk_event_controller_get_current_event")]
     #[doc(alias = "get_current_event")]
     fn current_event(&self) -> Option<gdk::Event> {
diff --git a/gtk4/src/auto/file_chooser.rs b/gtk4/src/auto/file_chooser.rs
index 32e735b07590..2e227b1d4fa2 100644
--- a/gtk4/src/auto/file_chooser.rs
+++ b/gtk4/src/auto/file_chooser.rs
@@ -24,12 +24,7 @@ impl FileChooser {
     pub const NONE: Option<&'static FileChooser> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::FileChooser>> Sealed for T {}
-}
-
-pub trait FileChooserExt: IsA<FileChooser> + sealed::Sealed + 'static {
+pub trait FileChooserExt: IsA<FileChooser> + 'static {
     #[cfg_attr(feature = "v4_10", deprecated = "Since 4.10")]
     #[allow(deprecated)]
     #[doc(alias = "gtk_file_chooser_add_filter")]
diff --git a/gtk4/src/auto/filter.rs b/gtk4/src/auto/filter.rs
index 4235e80c87cb..f942d35713fb 100644
--- a/gtk4/src/auto/filter.rs
+++ b/gtk4/src/auto/filter.rs
@@ -23,12 +23,7 @@ impl Filter {
     pub const NONE: Option<&'static Filter> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Filter>> Sealed for T {}
-}
-
-pub trait FilterExt: IsA<Filter> + sealed::Sealed + 'static {
+pub trait FilterExt: IsA<Filter> + 'static {
     #[doc(alias = "gtk_filter_changed")]
     fn changed(&self, change: FilterChange) {
         unsafe {
diff --git a/gtk4/src/auto/fixed.rs b/gtk4/src/auto/fixed.rs
index 6175c249648e..cc66ab361a24 100644
--- a/gtk4/src/auto/fixed.rs
+++ b/gtk4/src/auto/fixed.rs
@@ -249,12 +249,7 @@ impl FixedBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Fixed>> Sealed for T {}
-}
-
-pub trait FixedExt: IsA<Fixed> + sealed::Sealed + 'static {
+pub trait FixedExt: IsA<Fixed> + 'static {
     #[doc(alias = "gtk_fixed_get_child_position")]
     #[doc(alias = "get_child_position")]
     fn child_position(&self, widget: &impl IsA<Widget>) -> (f64, f64) {
diff --git a/gtk4/src/auto/flow_box_child.rs b/gtk4/src/auto/flow_box_child.rs
index 5c8a500ebd30..0d612d65425c 100644
--- a/gtk4/src/auto/flow_box_child.rs
+++ b/gtk4/src/auto/flow_box_child.rs
@@ -260,12 +260,7 @@ impl FlowBoxChildBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::FlowBoxChild>> Sealed for T {}
-}
-
-pub trait FlowBoxChildExt: IsA<FlowBoxChild> + sealed::Sealed + 'static {
+pub trait FlowBoxChildExt: IsA<FlowBoxChild> + 'static {
     #[doc(alias = "gtk_flow_box_child_changed")]
     fn changed(&self) {
         unsafe {
diff --git a/gtk4/src/auto/font_chooser.rs b/gtk4/src/auto/font_chooser.rs
index 20f7a0d09e19..2ec48f0bca44 100644
--- a/gtk4/src/auto/font_chooser.rs
+++ b/gtk4/src/auto/font_chooser.rs
@@ -24,12 +24,7 @@ impl FontChooser {
     pub const NONE: Option<&'static FontChooser> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::FontChooser>> Sealed for T {}
-}
-
-pub trait FontChooserExt: IsA<FontChooser> + sealed::Sealed + 'static {
+pub trait FontChooserExt: IsA<FontChooser> + 'static {
     #[cfg_attr(feature = "v4_10", deprecated = "Since 4.10")]
     #[allow(deprecated)]
     #[doc(alias = "gtk_font_chooser_get_font")]
diff --git a/gtk4/src/auto/frame.rs b/gtk4/src/auto/frame.rs
index 25d908e32d82..8333a8d3676a 100644
--- a/gtk4/src/auto/frame.rs
+++ b/gtk4/src/auto/frame.rs
@@ -280,12 +280,7 @@ impl FrameBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Frame>> Sealed for T {}
-}
-
-pub trait FrameExt: IsA<Frame> + sealed::Sealed + 'static {
+pub trait FrameExt: IsA<Frame> + 'static {
     #[doc(alias = "gtk_frame_get_child")]
     #[doc(alias = "get_child")]
     fn child(&self) -> Option<Widget> {
diff --git a/gtk4/src/auto/gesture.rs b/gtk4/src/auto/gesture.rs
index 0ed6ea7e90eb..061d51cf4d71 100644
--- a/gtk4/src/auto/gesture.rs
+++ b/gtk4/src/auto/gesture.rs
@@ -24,12 +24,7 @@ impl Gesture {
     pub const NONE: Option<&'static Gesture> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Gesture>> Sealed for T {}
-}
-
-pub trait GestureExt: IsA<Gesture> + sealed::Sealed + 'static {
+pub trait GestureExt: IsA<Gesture> + 'static {
     #[doc(alias = "gtk_gesture_get_bounding_box")]
     #[doc(alias = "get_bounding_box")]
     fn bounding_box(&self) -> Option<gdk::Rectangle> {
diff --git a/gtk4/src/auto/gesture_drag.rs b/gtk4/src/auto/gesture_drag.rs
index 0a0aa8e9df57..ef514cbc95c8 100644
--- a/gtk4/src/auto/gesture_drag.rs
+++ b/gtk4/src/auto/gesture_drag.rs
@@ -113,12 +113,7 @@ impl GestureDragBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::GestureDrag>> Sealed for T {}
-}
-
-pub trait GestureDragExt: IsA<GestureDrag> + sealed::Sealed + 'static {
+pub trait GestureDragExt: IsA<GestureDrag> + 'static {
     #[doc(alias = "gtk_gesture_drag_get_offset")]
     #[doc(alias = "get_offset")]
     fn offset(&self) -> Option<(f64, f64)> {
diff --git a/gtk4/src/auto/gesture_single.rs b/gtk4/src/auto/gesture_single.rs
index 2490baf71c73..48ed8fb84a1f 100644
--- a/gtk4/src/auto/gesture_single.rs
+++ b/gtk4/src/auto/gesture_single.rs
@@ -23,12 +23,7 @@ impl GestureSingle {
     pub const NONE: Option<&'static GestureSingle> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::GestureSingle>> Sealed for T {}
-}
-
-pub trait GestureSingleExt: IsA<GestureSingle> + sealed::Sealed + 'static {
+pub trait GestureSingleExt: IsA<GestureSingle> + 'static {
     #[doc(alias = "gtk_gesture_single_get_button")]
     #[doc(alias = "get_button")]
     fn button(&self) -> u32 {
diff --git a/gtk4/src/auto/gl_area.rs b/gtk4/src/auto/gl_area.rs
index 8fc9a4c7129c..35f0e956f9ec 100644
--- a/gtk4/src/auto/gl_area.rs
+++ b/gtk4/src/auto/gl_area.rs
@@ -290,12 +290,7 @@ impl GLAreaBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::GLArea>> Sealed for T {}
-}
-
-pub trait GLAreaExt: IsA<GLArea> + sealed::Sealed + 'static {
+pub trait GLAreaExt: IsA<GLArea> + 'static {
     #[doc(alias = "gtk_gl_area_attach_buffers")]
     fn attach_buffers(&self) {
         unsafe {
diff --git a/gtk4/src/auto/grid.rs b/gtk4/src/auto/grid.rs
index 15ec72406d09..48fc9485fcb4 100644
--- a/gtk4/src/auto/grid.rs
+++ b/gtk4/src/auto/grid.rs
@@ -292,12 +292,7 @@ impl GridBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Grid>> Sealed for T {}
-}
-
-pub trait GridExt: IsA<Grid> + sealed::Sealed + 'static {
+pub trait GridExt: IsA<Grid> + 'static {
     #[doc(alias = "gtk_grid_attach")]
     fn attach(&self, child: &impl IsA<Widget>, column: i32, row: i32, width: i32, height: i32) {
         unsafe {
diff --git a/gtk4/src/auto/im_context.rs b/gtk4/src/auto/im_context.rs
index 948e11403c7d..3a8f0bbab1f3 100644
--- a/gtk4/src/auto/im_context.rs
+++ b/gtk4/src/auto/im_context.rs
@@ -24,12 +24,7 @@ impl IMContext {
     pub const NONE: Option<&'static IMContext> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::IMContext>> Sealed for T {}
-}
-
-pub trait IMContextExt: IsA<IMContext> + sealed::Sealed + 'static {
+pub trait IMContextExt: IsA<IMContext> + 'static {
     #[cfg(feature = "v4_14")]
     #[cfg_attr(docsrs, doc(cfg(feature = "v4_14")))]
     #[doc(alias = "gtk_im_context_activate_osk")]
diff --git a/gtk4/src/auto/im_multicontext.rs b/gtk4/src/auto/im_multicontext.rs
index 20e6c964c196..46b5efcb3358 100644
--- a/gtk4/src/auto/im_multicontext.rs
+++ b/gtk4/src/auto/im_multicontext.rs
@@ -74,12 +74,7 @@ impl IMMulticontextBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::IMMulticontext>> Sealed for T {}
-}
-
-pub trait IMMulticontextExt: IsA<IMMulticontext> + sealed::Sealed + 'static {
+pub trait IMMulticontextExt: IsA<IMMulticontext> + 'static {
     #[doc(alias = "gtk_im_multicontext_get_context_id")]
     #[doc(alias = "get_context_id")]
     fn context_id(&self) -> glib::GString {
diff --git a/gtk4/src/auto/layout_child.rs b/gtk4/src/auto/layout_child.rs
index ead8838cf617..15a11606bd42 100644
--- a/gtk4/src/auto/layout_child.rs
+++ b/gtk4/src/auto/layout_child.rs
@@ -18,12 +18,7 @@ impl LayoutChild {
     pub const NONE: Option<&'static LayoutChild> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::LayoutChild>> Sealed for T {}
-}
-
-pub trait LayoutChildExt: IsA<LayoutChild> + sealed::Sealed + 'static {
+pub trait LayoutChildExt: IsA<LayoutChild> + 'static {
     #[doc(alias = "gtk_layout_child_get_child_widget")]
     #[doc(alias = "get_child_widget")]
     #[doc(alias = "child-widget")]
diff --git a/gtk4/src/auto/layout_manager.rs b/gtk4/src/auto/layout_manager.rs
index 03c288f29d37..ccf612dfb223 100644
--- a/gtk4/src/auto/layout_manager.rs
+++ b/gtk4/src/auto/layout_manager.rs
@@ -18,12 +18,7 @@ impl LayoutManager {
     pub const NONE: Option<&'static LayoutManager> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::LayoutManager>> Sealed for T {}
-}
-
-pub trait LayoutManagerExt: IsA<LayoutManager> + sealed::Sealed + 'static {
+pub trait LayoutManagerExt: IsA<LayoutManager> + 'static {
     #[doc(alias = "gtk_layout_manager_allocate")]
     fn allocate(&self, widget: &impl IsA<Widget>, width: i32, height: i32, baseline: i32) {
         unsafe {
diff --git a/gtk4/src/auto/list_box_row.rs b/gtk4/src/auto/list_box_row.rs
index 928d9476a675..8d48021d1110 100644
--- a/gtk4/src/auto/list_box_row.rs
+++ b/gtk4/src/auto/list_box_row.rs
@@ -286,12 +286,7 @@ impl ListBoxRowBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::ListBoxRow>> Sealed for T {}
-}
-
-pub trait ListBoxRowExt: IsA<ListBoxRow> + sealed::Sealed + 'static {
+pub trait ListBoxRowExt: IsA<ListBoxRow> + 'static {
     #[doc(alias = "gtk_list_box_row_changed")]
     fn changed(&self) {
         unsafe {
diff --git a/gtk4/src/auto/list_item.rs b/gtk4/src/auto/list_item.rs
index 4b46d14f1e75..4402b1f2c25b 100644
--- a/gtk4/src/auto/list_item.rs
+++ b/gtk4/src/auto/list_item.rs
@@ -23,12 +23,7 @@ impl ListItem {
     pub const NONE: Option<&'static ListItem> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::ListItem>> Sealed for T {}
-}
-
-pub trait ListItemExt: IsA<ListItem> + sealed::Sealed + 'static {
+pub trait ListItemExt: IsA<ListItem> + 'static {
     #[cfg(feature = "v4_12")]
     #[cfg_attr(docsrs, doc(cfg(feature = "v4_12")))]
     #[doc(alias = "gtk_list_item_get_accessible_description")]
diff --git a/gtk4/src/auto/media_file.rs b/gtk4/src/auto/media_file.rs
index 9dcd12afea13..bbe2a3c07bcc 100644
--- a/gtk4/src/auto/media_file.rs
+++ b/gtk4/src/auto/media_file.rs
@@ -79,12 +79,7 @@ impl Default for MediaFile {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::MediaFile>> Sealed for T {}
-}
-
-pub trait MediaFileExt: IsA<MediaFile> + sealed::Sealed + 'static {
+pub trait MediaFileExt: IsA<MediaFile> + 'static {
     #[doc(alias = "gtk_media_file_clear")]
     fn clear(&self) {
         unsafe {
diff --git a/gtk4/src/auto/media_stream.rs b/gtk4/src/auto/media_stream.rs
index 58c827b875e9..5f9dca7f5683 100644
--- a/gtk4/src/auto/media_stream.rs
+++ b/gtk4/src/auto/media_stream.rs
@@ -24,12 +24,7 @@ impl MediaStream {
     pub const NONE: Option<&'static MediaStream> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::MediaStream>> Sealed for T {}
-}
-
-pub trait MediaStreamExt: IsA<MediaStream> + sealed::Sealed + 'static {
+pub trait MediaStreamExt: IsA<MediaStream> + 'static {
     #[cfg_attr(feature = "v4_4", deprecated = "Since 4.4")]
     #[allow(deprecated)]
     #[doc(alias = "gtk_media_stream_ended")]
diff --git a/gtk4/src/auto/mount_operation.rs b/gtk4/src/auto/mount_operation.rs
index 5dad7d72aaa2..80adf5b21235 100644
--- a/gtk4/src/auto/mount_operation.rs
+++ b/gtk4/src/auto/mount_operation.rs
@@ -142,12 +142,7 @@ impl MountOperationBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::MountOperation>> Sealed for T {}
-}
-
-pub trait GtkMountOperationExt: IsA<MountOperation> + sealed::Sealed + 'static {
+pub trait GtkMountOperationExt: IsA<MountOperation> + 'static {
     #[doc(alias = "gtk_mount_operation_get_display")]
     #[doc(alias = "get_display")]
     fn display(&self) -> gdk::Display {
diff --git a/gtk4/src/auto/multi_filter.rs b/gtk4/src/auto/multi_filter.rs
index 060fc43185fe..1e16371ac3a1 100644
--- a/gtk4/src/auto/multi_filter.rs
+++ b/gtk4/src/auto/multi_filter.rs
@@ -18,12 +18,7 @@ impl MultiFilter {
     pub const NONE: Option<&'static MultiFilter> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::MultiFilter>> Sealed for T {}
-}
-
-pub trait MultiFilterExt: IsA<MultiFilter> + sealed::Sealed + 'static {
+pub trait MultiFilterExt: IsA<MultiFilter> + 'static {
     #[doc(alias = "gtk_multi_filter_append")]
     fn append(&self, filter: impl IsA<Filter>) {
         unsafe {
diff --git a/gtk4/src/auto/native.rs b/gtk4/src/auto/native.rs
index 6fe63a831728..65ef09565ac3 100644
--- a/gtk4/src/auto/native.rs
+++ b/gtk4/src/auto/native.rs
@@ -29,12 +29,7 @@ impl Native {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Native>> Sealed for T {}
-}
-
-pub trait NativeExt: IsA<Native> + sealed::Sealed + 'static {
+pub trait NativeExt: IsA<Native> + 'static {
     #[doc(alias = "gtk_native_get_renderer")]
     #[doc(alias = "get_renderer")]
     fn renderer(&self) -> Option<gsk::Renderer> {
diff --git a/gtk4/src/auto/native_dialog.rs b/gtk4/src/auto/native_dialog.rs
index bedb5270fabc..6c65ee67d5d1 100644
--- a/gtk4/src/auto/native_dialog.rs
+++ b/gtk4/src/auto/native_dialog.rs
@@ -23,12 +23,7 @@ impl NativeDialog {
     pub const NONE: Option<&'static NativeDialog> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::NativeDialog>> Sealed for T {}
-}
-
-pub trait NativeDialogExt: IsA<NativeDialog> + sealed::Sealed + 'static {
+pub trait NativeDialogExt: IsA<NativeDialog> + 'static {
     #[doc(alias = "gtk_native_dialog_destroy")]
     fn destroy(&self) {
         unsafe {
diff --git a/gtk4/src/auto/orientable.rs b/gtk4/src/auto/orientable.rs
index 7ead044eb26e..b5f105ae50ce 100644
--- a/gtk4/src/auto/orientable.rs
+++ b/gtk4/src/auto/orientable.rs
@@ -23,12 +23,7 @@ impl Orientable {
     pub const NONE: Option<&'static Orientable> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Orientable>> Sealed for T {}
-}
-
-pub trait OrientableExt: IsA<Orientable> + sealed::Sealed + 'static {
+pub trait OrientableExt: IsA<Orientable> + 'static {
     #[doc(alias = "gtk_orientable_get_orientation")]
     #[doc(alias = "get_orientation")]
     fn orientation(&self) -> Orientation {
diff --git a/gtk4/src/auto/popover.rs b/gtk4/src/auto/popover.rs
index 4a055f3bfbb9..73f7cb33b68b 100644
--- a/gtk4/src/auto/popover.rs
+++ b/gtk4/src/auto/popover.rs
@@ -306,12 +306,7 @@ impl PopoverBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Popover>> Sealed for T {}
-}
-
-pub trait PopoverExt: IsA<Popover> + sealed::Sealed + 'static {
+pub trait PopoverExt: IsA<Popover> + 'static {
     #[doc(alias = "gtk_popover_get_autohide")]
     #[doc(alias = "get_autohide")]
     #[doc(alias = "autohide")]
diff --git a/gtk4/src/auto/print_operation.rs b/gtk4/src/auto/print_operation.rs
index bcacaad3294d..48c2f1e1f8aa 100644
--- a/gtk4/src/auto/print_operation.rs
+++ b/gtk4/src/auto/print_operation.rs
@@ -172,12 +172,7 @@ impl PrintOperationBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::PrintOperation>> Sealed for T {}
-}
-
-pub trait PrintOperationExt: IsA<PrintOperation> + sealed::Sealed + 'static {
+pub trait PrintOperationExt: IsA<PrintOperation> + 'static {
     #[doc(alias = "gtk_print_operation_cancel")]
     fn cancel(&self) {
         unsafe {
diff --git a/gtk4/src/auto/print_operation_preview.rs b/gtk4/src/auto/print_operation_preview.rs
index ce071e919ac5..966c2d538e1b 100644
--- a/gtk4/src/auto/print_operation_preview.rs
+++ b/gtk4/src/auto/print_operation_preview.rs
@@ -23,12 +23,7 @@ impl PrintOperationPreview {
     pub const NONE: Option<&'static PrintOperationPreview> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::PrintOperationPreview>> Sealed for T {}
-}
-
-pub trait PrintOperationPreviewExt: IsA<PrintOperationPreview> + sealed::Sealed + 'static {
+pub trait PrintOperationPreviewExt: IsA<PrintOperationPreview> + 'static {
     #[doc(alias = "gtk_print_operation_preview_end_preview")]
     fn end_preview(&self) {
         unsafe {
diff --git a/gtk4/src/auto/range.rs b/gtk4/src/auto/range.rs
index b9a4880fd785..c5ceffdd86f1 100644
--- a/gtk4/src/auto/range.rs
+++ b/gtk4/src/auto/range.rs
@@ -40,12 +40,7 @@ impl Range {
     pub const NONE: Option<&'static Range> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Range>> Sealed for T {}
-}
-
-pub trait RangeExt: IsA<Range> + sealed::Sealed + 'static {
+pub trait RangeExt: IsA<Range> + 'static {
     #[doc(alias = "gtk_range_get_adjustment")]
     #[doc(alias = "get_adjustment")]
     fn adjustment(&self) -> Adjustment {
diff --git a/gtk4/src/auto/recent_manager.rs b/gtk4/src/auto/recent_manager.rs
index 345ef66e3c94..16357b888ec5 100644
--- a/gtk4/src/auto/recent_manager.rs
+++ b/gtk4/src/auto/recent_manager.rs
@@ -43,12 +43,7 @@ impl Default for RecentManager {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::RecentManager>> Sealed for T {}
-}
-
-pub trait RecentManagerExt: IsA<RecentManager> + sealed::Sealed + 'static {
+pub trait RecentManagerExt: IsA<RecentManager> + 'static {
     #[doc(alias = "gtk_recent_manager_add_full")]
     fn add_full(&self, uri: &str, recent_data: &RecentData) -> bool {
         unsafe {
diff --git a/gtk4/src/auto/root.rs b/gtk4/src/auto/root.rs
index 083b5a3a872b..2cb841403dea 100644
--- a/gtk4/src/auto/root.rs
+++ b/gtk4/src/auto/root.rs
@@ -18,12 +18,7 @@ impl Root {
     pub const NONE: Option<&'static Root> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Root>> Sealed for T {}
-}
-
-pub trait RootExt: IsA<Root> + sealed::Sealed + 'static {
+pub trait RootExt: IsA<Root> + 'static {
     #[doc(alias = "gtk_root_get_display")]
     #[doc(alias = "get_display")]
     fn display(&self) -> gdk::Display {
diff --git a/gtk4/src/auto/scale.rs b/gtk4/src/auto/scale.rs
index 3f67f5a378b9..0467a3f62fa3 100644
--- a/gtk4/src/auto/scale.rs
+++ b/gtk4/src/auto/scale.rs
@@ -360,12 +360,7 @@ impl ScaleBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Scale>> Sealed for T {}
-}
-
-pub trait ScaleExt: IsA<Scale> + sealed::Sealed + 'static {
+pub trait ScaleExt: IsA<Scale> + 'static {
     #[doc(alias = "gtk_scale_add_mark")]
     fn add_mark(&self, value: f64, position: PositionType, markup: Option<&str>) {
         unsafe {
diff --git a/gtk4/src/auto/scale_button.rs b/gtk4/src/auto/scale_button.rs
index f18972fc2e92..497f6b1e17d6 100644
--- a/gtk4/src/auto/scale_button.rs
+++ b/gtk4/src/auto/scale_button.rs
@@ -311,12 +311,7 @@ impl ScaleButtonBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::ScaleButton>> Sealed for T {}
-}
-
-pub trait ScaleButtonExt: IsA<ScaleButton> + sealed::Sealed + 'static {
+pub trait ScaleButtonExt: IsA<ScaleButton> + 'static {
     #[cfg(feature = "v4_10")]
     #[cfg_attr(docsrs, doc(cfg(feature = "v4_10")))]
     #[doc(alias = "gtk_scale_button_get_active")]
diff --git a/gtk4/src/auto/scrollable.rs b/gtk4/src/auto/scrollable.rs
index b0768ebe08e4..7231ab53e053 100644
--- a/gtk4/src/auto/scrollable.rs
+++ b/gtk4/src/auto/scrollable.rs
@@ -23,12 +23,7 @@ impl Scrollable {
     pub const NONE: Option<&'static Scrollable> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Scrollable>> Sealed for T {}
-}
-
-pub trait ScrollableExt: IsA<Scrollable> + sealed::Sealed + 'static {
+pub trait ScrollableExt: IsA<Scrollable> + 'static {
     #[doc(alias = "gtk_scrollable_get_border")]
     #[doc(alias = "get_border")]
     fn border(&self) -> Option<Border> {
diff --git a/gtk4/src/auto/section_model.rs b/gtk4/src/auto/section_model.rs
index b9590b7b8ae9..130ac6ef828a 100644
--- a/gtk4/src/auto/section_model.rs
+++ b/gtk4/src/auto/section_model.rs
@@ -23,12 +23,7 @@ impl SectionModel {
     pub const NONE: Option<&'static SectionModel> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::SectionModel>> Sealed for T {}
-}
-
-pub trait SectionModelExt: IsA<SectionModel> + sealed::Sealed + 'static {
+pub trait SectionModelExt: IsA<SectionModel> + 'static {
     #[doc(alias = "gtk_section_model_get_section")]
     #[doc(alias = "get_section")]
     fn section(&self, position: u32) -> (u32, u32) {
diff --git a/gtk4/src/auto/selection_model.rs b/gtk4/src/auto/selection_model.rs
index 41d37bd5241d..fc4a4546fe9f 100644
--- a/gtk4/src/auto/selection_model.rs
+++ b/gtk4/src/auto/selection_model.rs
@@ -23,12 +23,7 @@ impl SelectionModel {
     pub const NONE: Option<&'static SelectionModel> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::SelectionModel>> Sealed for T {}
-}
-
-pub trait SelectionModelExt: IsA<SelectionModel> + sealed::Sealed + 'static {
+pub trait SelectionModelExt: IsA<SelectionModel> + 'static {
     #[doc(alias = "gtk_selection_model_get_selection")]
     #[doc(alias = "get_selection")]
     fn selection(&self) -> Bitset {
diff --git a/gtk4/src/auto/shortcut_action.rs b/gtk4/src/auto/shortcut_action.rs
index 00df1d133f28..be452776e845 100644
--- a/gtk4/src/auto/shortcut_action.rs
+++ b/gtk4/src/auto/shortcut_action.rs
@@ -35,12 +35,7 @@ impl std::fmt::Display for ShortcutAction {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::ShortcutAction>> Sealed for T {}
-}
-
-pub trait ShortcutActionExt: IsA<ShortcutAction> + sealed::Sealed + 'static {
+pub trait ShortcutActionExt: IsA<ShortcutAction> + 'static {
     #[doc(alias = "gtk_shortcut_action_activate")]
     fn activate(
         &self,
diff --git a/gtk4/src/auto/shortcut_manager.rs b/gtk4/src/auto/shortcut_manager.rs
index d74dc828e368..44e0e75638a5 100644
--- a/gtk4/src/auto/shortcut_manager.rs
+++ b/gtk4/src/auto/shortcut_manager.rs
@@ -18,11 +18,6 @@ impl ShortcutManager {
     pub const NONE: Option<&'static ShortcutManager> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::ShortcutManager>> Sealed for T {}
-}
-
-pub trait ShortcutManagerExt: IsA<ShortcutManager> + sealed::Sealed + 'static {}
+pub trait ShortcutManagerExt: IsA<ShortcutManager> + 'static {}
 
 impl<O: IsA<ShortcutManager>> ShortcutManagerExt for O {}
diff --git a/gtk4/src/auto/shortcut_trigger.rs b/gtk4/src/auto/shortcut_trigger.rs
index bc2c8a60bdcb..2c81517c59da 100644
--- a/gtk4/src/auto/shortcut_trigger.rs
+++ b/gtk4/src/auto/shortcut_trigger.rs
@@ -35,12 +35,7 @@ impl std::fmt::Display for ShortcutTrigger {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::ShortcutTrigger>> Sealed for T {}
-}
-
-pub trait ShortcutTriggerExt: IsA<ShortcutTrigger> + sealed::Sealed + 'static {
+pub trait ShortcutTriggerExt: IsA<ShortcutTrigger> + 'static {
     #[doc(alias = "gtk_shortcut_trigger_to_label")]
     fn to_label(&self, display: &impl IsA<gdk::Display>) -> glib::GString {
         unsafe {
diff --git a/gtk4/src/auto/snapshot.rs b/gtk4/src/auto/snapshot.rs
index d59ad6bfad95..66b3e879ddac 100644
--- a/gtk4/src/auto/snapshot.rs
+++ b/gtk4/src/auto/snapshot.rs
@@ -31,12 +31,7 @@ impl Default for Snapshot {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Snapshot>> Sealed for T {}
-}
-
-pub trait SnapshotExt: IsA<Snapshot> + sealed::Sealed + 'static {
+pub trait SnapshotExt: IsA<Snapshot> + 'static {
     #[doc(alias = "gtk_snapshot_append_cairo")]
     fn append_cairo(&self, bounds: &graphene::Rect) -> cairo::Context {
         unsafe {
diff --git a/gtk4/src/auto/sorter.rs b/gtk4/src/auto/sorter.rs
index 74d6ee7a12e2..76c1862e131f 100644
--- a/gtk4/src/auto/sorter.rs
+++ b/gtk4/src/auto/sorter.rs
@@ -23,12 +23,7 @@ impl Sorter {
     pub const NONE: Option<&'static Sorter> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Sorter>> Sealed for T {}
-}
-
-pub trait SorterExt: IsA<Sorter> + sealed::Sealed + 'static {
+pub trait SorterExt: IsA<Sorter> + 'static {
     #[doc(alias = "gtk_sorter_changed")]
     fn changed(&self, change: SorterChange) {
         unsafe {
diff --git a/gtk4/src/auto/style_context.rs b/gtk4/src/auto/style_context.rs
index 325b0521c37b..fcd15b112ce6 100644
--- a/gtk4/src/auto/style_context.rs
+++ b/gtk4/src/auto/style_context.rs
@@ -24,12 +24,7 @@ impl StyleContext {
     pub const NONE: Option<&'static StyleContext> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::StyleContext>> Sealed for T {}
-}
-
-pub trait StyleContextExt: IsA<StyleContext> + sealed::Sealed + 'static {
+pub trait StyleContextExt: IsA<StyleContext> + 'static {
     #[cfg_attr(feature = "v4_10", deprecated = "Since 4.10")]
     #[allow(deprecated)]
     #[doc(alias = "gtk_style_context_add_class")]
diff --git a/gtk4/src/auto/style_provider.rs b/gtk4/src/auto/style_provider.rs
index 8a64b8b86a29..496a11a932d9 100644
--- a/gtk4/src/auto/style_provider.rs
+++ b/gtk4/src/auto/style_provider.rs
@@ -23,12 +23,7 @@ impl StyleProvider {
     pub const NONE: Option<&'static StyleProvider> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::StyleProvider>> Sealed for T {}
-}
-
-pub trait StyleProviderExt: IsA<StyleProvider> + sealed::Sealed + 'static {
+pub trait StyleProviderExt: IsA<StyleProvider> + 'static {
     #[doc(alias = "gtk-private-changed")]
     fn connect_gtk_private_changed<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
         unsafe extern "C" fn gtk_private_changed_trampoline<
diff --git a/gtk4/src/auto/symbolic_paintable.rs b/gtk4/src/auto/symbolic_paintable.rs
index 369e1246b7e8..40b5692f67ce 100644
--- a/gtk4/src/auto/symbolic_paintable.rs
+++ b/gtk4/src/auto/symbolic_paintable.rs
@@ -18,12 +18,7 @@ impl SymbolicPaintable {
     pub const NONE: Option<&'static SymbolicPaintable> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::SymbolicPaintable>> Sealed for T {}
-}
-
-pub trait SymbolicPaintableExt: IsA<SymbolicPaintable> + sealed::Sealed + 'static {
+pub trait SymbolicPaintableExt: IsA<SymbolicPaintable> + 'static {
     #[doc(alias = "gtk_symbolic_paintable_snapshot_symbolic")]
     fn snapshot_symbolic(
         &self,
diff --git a/gtk4/src/auto/text_buffer.rs b/gtk4/src/auto/text_buffer.rs
index 087ff42611b0..cbb52f9c79a7 100644
--- a/gtk4/src/auto/text_buffer.rs
+++ b/gtk4/src/auto/text_buffer.rs
@@ -85,12 +85,7 @@ impl TextBufferBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::TextBuffer>> Sealed for T {}
-}
-
-pub trait TextBufferExt: IsA<TextBuffer> + sealed::Sealed + 'static {
+pub trait TextBufferExt: IsA<TextBuffer> + 'static {
     #[doc(alias = "gtk_text_buffer_add_mark")]
     fn add_mark(&self, mark: &impl IsA<TextMark>, where_: &TextIter) {
         unsafe {
diff --git a/gtk4/src/auto/text_child_anchor.rs b/gtk4/src/auto/text_child_anchor.rs
index f7da1126c24b..07c9785a2d8e 100644
--- a/gtk4/src/auto/text_child_anchor.rs
+++ b/gtk4/src/auto/text_child_anchor.rs
@@ -43,12 +43,7 @@ impl Default for TextChildAnchor {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::TextChildAnchor>> Sealed for T {}
-}
-
-pub trait TextChildAnchorExt: IsA<TextChildAnchor> + sealed::Sealed + 'static {
+pub trait TextChildAnchorExt: IsA<TextChildAnchor> + 'static {
     #[doc(alias = "gtk_text_child_anchor_get_deleted")]
     #[doc(alias = "get_deleted")]
     fn is_deleted(&self) -> bool {
diff --git a/gtk4/src/auto/text_mark.rs b/gtk4/src/auto/text_mark.rs
index 6a0b5cc68ea1..0b5a51cf08ba 100644
--- a/gtk4/src/auto/text_mark.rs
+++ b/gtk4/src/auto/text_mark.rs
@@ -79,12 +79,7 @@ impl TextMarkBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::TextMark>> Sealed for T {}
-}
-
-pub trait TextMarkExt: IsA<TextMark> + sealed::Sealed + 'static {
+pub trait TextMarkExt: IsA<TextMark> + 'static {
     #[doc(alias = "gtk_text_mark_get_buffer")]
     #[doc(alias = "get_buffer")]
     fn buffer(&self) -> Option<TextBuffer> {
diff --git a/gtk4/src/auto/text_tag.rs b/gtk4/src/auto/text_tag.rs
index dd53fc56c3bd..53043b176a9d 100644
--- a/gtk4/src/auto/text_tag.rs
+++ b/gtk4/src/auto/text_tag.rs
@@ -661,12 +661,7 @@ impl TextTagBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::TextTag>> Sealed for T {}
-}
-
-pub trait TextTagExt: IsA<TextTag> + sealed::Sealed + 'static {
+pub trait TextTagExt: IsA<TextTag> + 'static {
     #[doc(alias = "gtk_text_tag_changed")]
     fn changed(&self, size_changed: bool) {
         unsafe {
diff --git a/gtk4/src/auto/text_view.rs b/gtk4/src/auto/text_view.rs
index 1fd566ed8671..b63a1940446c 100644
--- a/gtk4/src/auto/text_view.rs
+++ b/gtk4/src/auto/text_view.rs
@@ -445,12 +445,7 @@ impl TextViewBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::TextView>> Sealed for T {}
-}
-
-pub trait TextViewExt: IsA<TextView> + sealed::Sealed + 'static {
+pub trait TextViewExt: IsA<TextView> + 'static {
     #[doc(alias = "gtk_text_view_add_child_at_anchor")]
     fn add_child_at_anchor(&self, child: &impl IsA<Widget>, anchor: &impl IsA<TextChildAnchor>) {
         unsafe {
diff --git a/gtk4/src/auto/toggle_button.rs b/gtk4/src/auto/toggle_button.rs
index 4c69af8e719f..e86903175a1a 100644
--- a/gtk4/src/auto/toggle_button.rs
+++ b/gtk4/src/auto/toggle_button.rs
@@ -343,12 +343,7 @@ impl ToggleButtonBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::ToggleButton>> Sealed for T {}
-}
-
-pub trait ToggleButtonExt: IsA<ToggleButton> + sealed::Sealed + 'static {
+pub trait ToggleButtonExt: IsA<ToggleButton> + 'static {
     #[doc(alias = "gtk_toggle_button_get_active")]
     #[doc(alias = "get_active")]
     #[doc(alias = "active")]
diff --git a/gtk4/src/auto/tree_drag_dest.rs b/gtk4/src/auto/tree_drag_dest.rs
index 63042128bd5a..ad280aa7b45f 100644
--- a/gtk4/src/auto/tree_drag_dest.rs
+++ b/gtk4/src/auto/tree_drag_dest.rs
@@ -19,12 +19,7 @@ impl TreeDragDest {
     pub const NONE: Option<&'static TreeDragDest> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::TreeDragDest>> Sealed for T {}
-}
-
-pub trait TreeDragDestExt: IsA<TreeDragDest> + sealed::Sealed + 'static {
+pub trait TreeDragDestExt: IsA<TreeDragDest> + 'static {
     #[cfg_attr(feature = "v4_10", deprecated = "Since 4.10")]
     #[allow(deprecated)]
     #[doc(alias = "gtk_tree_drag_dest_drag_data_received")]
diff --git a/gtk4/src/auto/tree_drag_source.rs b/gtk4/src/auto/tree_drag_source.rs
index 7fa64ebe41bf..4fad8704a5af 100644
--- a/gtk4/src/auto/tree_drag_source.rs
+++ b/gtk4/src/auto/tree_drag_source.rs
@@ -19,12 +19,7 @@ impl TreeDragSource {
     pub const NONE: Option<&'static TreeDragSource> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::TreeDragSource>> Sealed for T {}
-}
-
-pub trait TreeDragSourceExt: IsA<TreeDragSource> + sealed::Sealed + 'static {
+pub trait TreeDragSourceExt: IsA<TreeDragSource> + 'static {
     #[cfg_attr(feature = "v4_10", deprecated = "Since 4.10")]
     #[allow(deprecated)]
     #[doc(alias = "gtk_tree_drag_source_drag_data_delete")]
diff --git a/gtk4/src/auto/tree_model.rs b/gtk4/src/auto/tree_model.rs
index f0b0e4cb3ab8..071d375f9a4f 100644
--- a/gtk4/src/auto/tree_model.rs
+++ b/gtk4/src/auto/tree_model.rs
@@ -24,12 +24,7 @@ impl TreeModel {
     pub const NONE: Option<&'static TreeModel> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::TreeModel>> Sealed for T {}
-}
-
-pub trait TreeModelExt: IsA<TreeModel> + sealed::Sealed + 'static {
+pub trait TreeModelExt: IsA<TreeModel> + 'static {
     #[cfg_attr(feature = "v4_10", deprecated = "Since 4.10")]
     #[allow(deprecated)]
     #[doc(alias = "gtk_tree_model_foreach")]
diff --git a/gtk4/src/auto/tree_model_filter.rs b/gtk4/src/auto/tree_model_filter.rs
index 1d993996b6f9..cd8c326dd1c5 100644
--- a/gtk4/src/auto/tree_model_filter.rs
+++ b/gtk4/src/auto/tree_model_filter.rs
@@ -20,12 +20,7 @@ impl TreeModelFilter {
     pub const NONE: Option<&'static TreeModelFilter> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::TreeModelFilter>> Sealed for T {}
-}
-
-pub trait TreeModelFilterExt: IsA<TreeModelFilter> + sealed::Sealed + 'static {
+pub trait TreeModelFilterExt: IsA<TreeModelFilter> + 'static {
     #[cfg_attr(feature = "v4_10", deprecated = "Since 4.10")]
     #[allow(deprecated)]
     #[doc(alias = "gtk_tree_model_filter_clear_cache")]
diff --git a/gtk4/src/auto/tree_model_sort.rs b/gtk4/src/auto/tree_model_sort.rs
index 9acb63a824bd..f465edc025e4 100644
--- a/gtk4/src/auto/tree_model_sort.rs
+++ b/gtk4/src/auto/tree_model_sort.rs
@@ -30,12 +30,7 @@ impl TreeModelSort {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::TreeModelSort>> Sealed for T {}
-}
-
-pub trait TreeModelSortExt: IsA<TreeModelSort> + sealed::Sealed + 'static {
+pub trait TreeModelSortExt: IsA<TreeModelSort> + 'static {
     #[cfg_attr(feature = "v4_10", deprecated = "Since 4.10")]
     #[allow(deprecated)]
     #[doc(alias = "gtk_tree_model_sort_clear_cache")]
diff --git a/gtk4/src/auto/tree_sortable.rs b/gtk4/src/auto/tree_sortable.rs
index 0d3ce6d03c15..0a0615952d50 100644
--- a/gtk4/src/auto/tree_sortable.rs
+++ b/gtk4/src/auto/tree_sortable.rs
@@ -24,12 +24,7 @@ impl TreeSortable {
     pub const NONE: Option<&'static TreeSortable> = None;
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::TreeSortable>> Sealed for T {}
-}
-
-pub trait TreeSortableExt: IsA<TreeSortable> + sealed::Sealed + 'static {
+pub trait TreeSortableExt: IsA<TreeSortable> + 'static {
     #[cfg_attr(feature = "v4_10", deprecated = "Since 4.10")]
     #[allow(deprecated)]
     #[doc(alias = "gtk_tree_sortable_has_default_sort_func")]
diff --git a/gtk4/src/auto/tree_view.rs b/gtk4/src/auto/tree_view.rs
index d6f8196a1ee1..497205f15aca 100644
--- a/gtk4/src/auto/tree_view.rs
+++ b/gtk4/src/auto/tree_view.rs
@@ -417,12 +417,7 @@ impl TreeViewBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::TreeView>> Sealed for T {}
-}
-
-pub trait TreeViewExt: IsA<TreeView> + sealed::Sealed + 'static {
+pub trait TreeViewExt: IsA<TreeView> + 'static {
     #[cfg_attr(feature = "v4_10", deprecated = "Since 4.10")]
     #[allow(deprecated)]
     #[doc(alias = "gtk_tree_view_append_column")]
diff --git a/gtk4/src/auto/versions.txt b/gtk4/src/auto/versions.txt
index f8c9324cb5db..0a416aa18620 100644
--- a/gtk4/src/auto/versions.txt
+++ b/gtk4/src/auto/versions.txt
@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ a11b11f2e403)
+Generated by gir (https://github.com/gtk-rs/gir @ eff839d4745d)
 from gir-files (https://github.com/gtk-rs/gir-files @ 62da9eb7c4bd)
diff --git a/gtk4/src/auto/widget.rs b/gtk4/src/auto/widget.rs
index b0bd2304f458..0d225957fbde 100644
--- a/gtk4/src/auto/widget.rs
+++ b/gtk4/src/auto/widget.rs
@@ -50,12 +50,7 @@ impl std::fmt::Display for Widget {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Widget>> Sealed for T {}
-}
-
-pub trait WidgetExt: IsA<Widget> + sealed::Sealed + 'static {
+pub trait WidgetExt: IsA<Widget> + 'static {
     #[doc(alias = "gtk_widget_action_set_enabled")]
     fn action_set_enabled(&self, action_name: &str, enabled: bool) {
         unsafe {
diff --git a/gtk4/src/auto/window.rs b/gtk4/src/auto/window.rs
index 694a457f38f1..4786698646ac 100644
--- a/gtk4/src/auto/window.rs
+++ b/gtk4/src/auto/window.rs
@@ -455,12 +455,7 @@ impl WindowBuilder {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::Window>> Sealed for T {}
-}
-
-pub trait GtkWindowExt: IsA<Window> + sealed::Sealed + 'static {
+pub trait GtkWindowExt: IsA<Window> + 'static {
     #[doc(alias = "gtk_window_close")]
     fn close(&self) {
         unsafe {
diff --git a/gtk4/src/auto/window_group.rs b/gtk4/src/auto/window_group.rs
index 3951ab3a6a83..02569df0ca5f 100644
--- a/gtk4/src/auto/window_group.rs
+++ b/gtk4/src/auto/window_group.rs
@@ -30,12 +30,7 @@ impl Default for WindowGroup {
     }
 }
 
-mod sealed {
-    pub trait Sealed {}
-    impl<T: super::IsA<super::WindowGroup>> Sealed for T {}
-}
-
-pub trait WindowGroupExt: IsA<WindowGroup> + sealed::Sealed + 'static {
+pub trait WindowGroupExt: IsA<WindowGroup> + 'static {
     #[doc(alias = "gtk_window_group_add_window")]
     fn add_window(&self, window: &impl IsA<Window>) {
         unsafe {
diff --git a/gtk4/sys/versions.txt b/gtk4/sys/versions.txt
index f8c9324cb5db..0a416aa18620 100644
--- a/gtk4/sys/versions.txt
+++ b/gtk4/sys/versions.txt
@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ a11b11f2e403)
+Generated by gir (https://github.com/gtk-rs/gir @ eff839d4745d)
 from gir-files (https://github.com/gtk-rs/gir-files @ 62da9eb7c4bd)