diff --git a/.github/workflows/cachix.yaml b/.github/workflows/cachix.yaml
index 87aad8c..de676d7 100644
--- a/.github/workflows/cachix.yaml
+++ b/.github/workflows/cachix.yaml
@@ -16,9 +16,11 @@ jobs:
     - uses: actions/checkout@v4
 
     - uses: cachix/install-nix-action@v27
+      with:
+        nix_path: nixpkgs=channel:nixos-24.05
 
     - name: Run alejandra
-      run: nix develop --command alejandra --check .
+      run: nix run nixpkgs#alejandra -- --check .
 
   flake-check:
     name: Flake check