diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index fd105d25b..73a952a38 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -74,6 +74,9 @@ jobs:
       - name: Build everything (default.nix)
         run: nix-build-uncached
 
+      - name: Build everything (shell.nix)
+        run: nix-build-uncached shell.nix
+
 
   stack:
     strategy: