diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 3369d42..89cfafb 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -22,6 +22,9 @@ jobs:
       - name: Install Nix
         uses: cachix/install-nix-action@v22
 
+      - name: Setup nixpkgs
+        run: nix-channel --add https://nixos.org/channels/nixpkgs-unstable && nix-channel --update
+
       - name: Setup Attic Cache
         uses: ./
         with:
@@ -29,4 +32,5 @@ jobs:
           cache: ${{ secrets.ATTIC_CACHE }}
           token: ${{ secrets.ATTIC_TOKEN }}
 
-      - run: nix-build test.nix
+      - name: Build
+        run: nix-build test.nix
diff --git a/.gitignore b/.gitignore
index 24be91f..5323301 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@ node_modules/
 # nix
 .direnv/
 .envrc
+result*