diff --git a/src/Symfony/Component/Lock/LockFactory.php b/src/Symfony/Component/Lock/LockFactory.php
index 2de93ce232..ca4e9d8496 100644
--- a/src/Symfony/Component/Lock/LockFactory.php
+++ b/src/Symfony/Component/Lock/LockFactory.php
@@ -26,7 +26,7 @@ class LockFactory extends Factory
      * @param float|null $ttl         Maximum expected lock duration in seconds
      * @param bool       $autoRelease Whether to automatically release the lock or not when the lock instance is destroyed
      */
-    public function createLock($resource, $ttl = 300.0, $autoRelease = true): Lock
+    public function createLock($resource, $ttl = 300.0, $autoRelease = true): LockInterface
     {
         return parent::createLock($resource, $ttl, $autoRelease);
     }