diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f23e4624ac4f6ead1186ac88405b151432fe8b81..debe5a207f06152cce2deb7cb9216c68c7aecc5d 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -41,7 +41,8 @@ web-tests:
   tags:
     - nixos-gen3
   script:
-    -  nix develop .#gitlab --command run-ci-web-tests
+    - nix --version
+    - nix develop .#gitlab --command run-ci-web-tests
   cache:
     untracked: true
     key: