diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 1bb67835f038606fb133d7431c3c6c3b13c1d42f..eb77299d755e70c5088e8c53baee7120e90c2b06 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -47,7 +47,9 @@ variables:
   cache:
     key: ${environment}-spack-cache
     policy: pull-push
-    untracked: true
+    paths:
+      - spack/
+      - compiler_definitions.yaml
 
 # ------------------------------------------------------------------------------
 spack:setup: