diff --git a/tests/stub.phpstub b/tests/stub.phpstub
index e7bd081d3..487fb897f 100644
--- a/tests/stub.phpstub
+++ b/tests/stub.phpstub
@@ -671,9 +671,15 @@ namespace OC\Files\Cache {
 
 namespace OC\Files\Cache\Wrapper {
 	use OC\Files\Cache\Cache;
+	use OCP\Files\Cache\ICache;
+
 	class CacheWrapper extends Cache {
         public function getCache(): Cache {}
 	}
+
+	class CacheJail extends CacheWrapper {
+		public function __construct(?ICache $cache, string $root, ?CacheDependencies $dependencies = null) {}
+	}
 }
 
 namespace OC\Files {