diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index e00e78f..a787c43 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -24,5 +24,5 @@ build-job:       # This job runs in the build stage, which runs first.
   stage: build
   script:
     - . "$HOME/.nix-profile/etc/profile.d/nix.sh"
-    - nix build
+    - nix build --extra-experimental-features nix-command --extra-experimental-features flakes