diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 253fc40..3139854 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -7,7 +7,7 @@ variables:
   SBT_CACHE_DIR: "sbt-cache/.ivy/cache"
 
 cache:
-  key: "$CI_BUILD_REF_NAME"
+  key: "$CI_COMMIT_REF_NAME"
   untracked: true
   paths:
     - "apt-cache/"