diff --git a/gtk4/src/accessible.rs b/gtk4/src/accessible.rs
index c73c6726f743..d10eb0c8381f 100644
--- a/gtk4/src/accessible.rs
+++ b/gtk4/src/accessible.rs
@@ -119,7 +119,7 @@ pub enum Property<'p> {
     ValueText(&'p str),
 }
 
-impl<'p> Property<'p> {
+impl Property<'_> {
     fn to_property_value(&self) -> (AccessibleProperty, Value) {
         use Property::*;
 
@@ -173,7 +173,7 @@ pub enum Relation<'r> {
     SetSize(i32),
 }
 
-impl<'r> Relation<'r> {
+impl Relation<'_> {
     fn to_relation_value(&self) -> (AccessibleRelation, Value) {
         use Relation::*;
 
diff --git a/gtk4/src/bitset_iter.rs b/gtk4/src/bitset_iter.rs
index ac4fcb52f74c..344e7dd57b8c 100644
--- a/gtk4/src/bitset_iter.rs
+++ b/gtk4/src/bitset_iter.rs
@@ -108,7 +108,7 @@ impl<'a> BitsetIter<'a> {
     }
 }
 
-impl<'a> Iterator for BitsetIter<'a> {
+impl Iterator for BitsetIter<'_> {
     type Item = u32;
 
     #[doc(alias = "gtk_bitset_iter_next")]
@@ -129,14 +129,14 @@ impl<'a> Iterator for BitsetIter<'a> {
     }
 }
 
-impl<'a> std::iter::FusedIterator for BitsetIter<'a> {}
+impl std::iter::FusedIterator for BitsetIter<'_> {}
 
 #[doc(hidden)]
 impl<'a> ToGlibPtr<'a, *const ffi::GtkBitsetIter> for BitsetIter<'a> {
     type Storage = &'a Self;
 
     #[inline]
-    fn to_glib_none(&'a self) -> Stash<*const ffi::GtkBitsetIter, Self> {
+    fn to_glib_none(&'a self) -> Stash<'a, *const ffi::GtkBitsetIter, Self> {
         Stash(&self.0 as *const ffi::GtkBitsetIter, self)
     }
 }
diff --git a/gtk4/src/response_type.rs b/gtk4/src/response_type.rs
index 3df4e9da2458..a862bb058b59 100644
--- a/gtk4/src/response_type.rs
+++ b/gtk4/src/response_type.rs
@@ -118,7 +118,7 @@ impl ValueType for ResponseType {
     type Type = Self;
 }
 
-unsafe impl<'a> FromValue<'a> for ResponseType {
+unsafe impl FromValue<'_> for ResponseType {
     type Checker = glib::value::GenericValueTypeChecker<Self>;
 
     #[inline]