diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index aeeb528..4d481f2 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,5 +1,7 @@
 image: docker:dind
 
+cache:key: 2
+
 variables:
   CONTAINER_TEST_IMAGE: "$CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG"
   CONTAINER_RELEASE_IMAGE: "$CI_REGISTRY_IMAGE:latest"