diff --git a/src/Block/BlockServiceInterface.php b/src/Block/BlockServiceInterface.php
index af9569ce..b2f867fd 100644
--- a/src/Block/BlockServiceInterface.php
+++ b/src/Block/BlockServiceInterface.php
@@ -58,7 +58,7 @@ public function setDefaultSettings(OptionsResolverInterface $resolver);
     public function load(BlockInterface $block);
 
     /**
-     * @deprecated since 3.x, to be removed in 4.0
+     * @deprecated since 3.13.0, to be removed in 4.0
      *
      * @param string $media
      *
@@ -67,7 +67,7 @@ public function load(BlockInterface $block);
     public function getJavascripts($media);
 
     /**
-     * @deprecated since 3.x, to be removed in 4.0
+     * @deprecated since 3.13.0, to be removed in 4.0
      *
      * @param string $media
      *
diff --git a/src/Templating/Helper/BlockHelper.php b/src/Templating/Helper/BlockHelper.php
index 5c081d9c..b44f6f54 100644
--- a/src/Templating/Helper/BlockHelper.php
+++ b/src/Templating/Helper/BlockHelper.php
@@ -339,14 +339,14 @@ protected function computeAssets(BlockContextInterface $blockContext, array &$st
 
         if (\count($assets['js']) > 0) {
             @trigger_error(
-                'Defining javascripts assets inside a block is deprecated since 3.x and will be removed in 4.0',
+                'Defining javascripts assets inside a block is deprecated since 3.3.0 and will be removed in 4.0',
                 E_USER_DEPRECATED
             );
         }
 
         if (\count($assets['css']) > 0) {
             @trigger_error(
-                'Defining css assets inside a block is deprecated since 3.x and will be removed in 4.0',
+                'Defining css assets inside a block is deprecated since 3.2.0 and will be removed in 4.0',
                 E_USER_DEPRECATED
             );
         }