diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index b4eda7ea91a079ca824ac2388609072ebf09da1b..46f22a0ae677a42b3cf6021534ab3f89b10e11b8 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,5 +1,6 @@
 stages:
 - generate
+- eval
 - check
 
 generate-flake-ci:
@@ -9,6 +10,10 @@ generate-flake-ci:
     paths:
       - flake-ci.yml
 
+eval-flake:
+  stage: eval
+  script: nix flake show
+
 flake-ci:
   stage: check
   trigger: