diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index dda5b6f3c2..11cb697cef 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -32,6 +32,9 @@ deps:
   cache:
     <<: *cache
     policy: pull-push
+  only:
+    changes:
+      - mix.lock
 
 openapi:
   stage: test