diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f68151e..2c0db60 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,7 +1,7 @@
 image: nixos/nix:latest
 
 before_script:
-  - echo "experimental-features= nix-command flakes" >> /etc/nix/nix.conf
+  - echo "extra-experimental-features = nix-command flakes" >> /etc/nix/nix.conf
   - nix-daemon &
 
 nix-flake-check: