diff --git a/core/tests/Drupal/FunctionalTests/Image/ToolkitTestBase.php b/core/tests/Drupal/FunctionalTests/Image/ToolkitTestBase.php
index 9dc9e360a7..acc9ddf8ea 100644
--- a/core/tests/Drupal/FunctionalTests/Image/ToolkitTestBase.php
+++ b/core/tests/Drupal/FunctionalTests/Image/ToolkitTestBase.php
@@ -11,7 +11,7 @@
 /**
  * Base class for image manipulation testing.
  *
- * @deprecated in drupal:9.1.0 and is removed from drupal:10.0.0. There is
+ * @deprecated in drupal:8.9.0 and is removed from drupal:10.0.0. There is
  *   no replacement provided as functional test base class because toolkit
  *   operations should be tested as kernel tests. ToolkitTestTrait trait has
  *   been added to provide a similar functionality for toolkit kernel tests.