diff --git a/core/tests/Drupal/Tests/Core/Cache/Context/SessionCacheContextTest.php b/core/tests/Drupal/Tests/Core/Cache/Context/SessionCacheContextTest.php
index b64e613..978c753 100644
--- a/core/tests/Drupal/Tests/Core/Cache/Context/SessionCacheContextTest.php
+++ b/core/tests/Drupal/Tests/Core/Cache/Context/SessionCacheContextTest.php
@@ -13,6 +13,7 @@
 
 /**
  * @coversDefaultClass \Drupal\Core\Cache\Context\SessionCacheContext
+ * @group Cache
  */
 class SessionCacheContextTest extends \PHPUnit_Framework_TestCase {