diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 9080b30..6bf96bd 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -42,8 +42,9 @@ update:
 
 .scripts_base: &scripts_base
   # load nix environment
-  - . "$HOME/.nix-profile/etc/profile.d/nix.sh"
   - git pull origin $CI_COMMIT_REF_NAME
+  - . "$HOME/.nix-profile/etc/profile.d/nix.sh"
+  - nix-shell -p colmena
 
 .scripts_deploy: &scripts_deploy
   # setup ssh key