diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 43e52dadabad4a646f51d6daae88a8c949a7fd36..8488cf15e47dd4e4d327bbb7878b998c1691d96f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -22,7 +22,7 @@ unit-tests:
 
 morph-builds:
   stage: "test"
-  environment:
+  variables:
     # CACHIX_AUTH_TOKEN, which lets us push to cachix, is supplied by GitLab
     # thanks to project-level configuration.
     CACHIX_NAME: "privatestorage-opensource"