diff --git a/utils/tests/gitlab-ci.yml b/utils/tests/gitlab-ci.yml
index 49d6362f2..7cf98ff0f 100644
--- a/utils/tests/gitlab-ci.yml
+++ b/utils/tests/gitlab-ci.yml
@@ -41,6 +41,7 @@ stages:
     - ./waf
     - ./test.py
   cache:
+    key: "$CI_JOB_NAME-$CI_COMMIT_REF_SLUG"
     paths:
       - $CCACHE_BASEDIR_VALUE/
   timeout: 9h