diff --git a/core/lib/Drupal/Core/Plugin/ContextAwarePluginBase.php b/core/lib/Drupal/Core/Plugin/ContextAwarePluginBase.php
index 1be0e353a51..463692d712a 100644
--- a/core/lib/Drupal/Core/Plugin/ContextAwarePluginBase.php
+++ b/core/lib/Drupal/Core/Plugin/ContextAwarePluginBase.php
@@ -13,6 +13,11 @@ use Drupal\Core\TypedData\TypedDataTrait;
 
 /**
  * Base class for plugins that are context aware.
+ *
+ * @deprecated in drupal:9.1.0 and is removed from drupal:10.0.0. Use
+ *   \Drupal\Core\Plugin\ContextAwarePluginTrait instead.
+ *
+ * @see https://www.drupal.org/node/3120980
  */
 abstract class ContextAwarePluginBase extends ComponentContextAwarePluginBase implements ContextAwarePluginInterface, CacheableDependencyInterface {