diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 077b1e6..3d0bba7 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -9,7 +9,11 @@ jobs:
         uses: actions/checkout@v4
       - name: install nix
         uses: cachix/install-nix-action@v23
-      - run: nix build
+        with:
+          name: opensource
+          authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+
+      - run: nix build --accept-flake-config
 
   build-devshell:
     runs-on: ubuntu-latest
@@ -18,7 +22,11 @@ jobs:
         uses: actions/checkout@v4
       - name: install nix
         uses: cachix/install-nix-action@v23
-      - run: nix build .#devShells.x86_64-linux.default
+        with:
+          name: opensource
+          authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+
+      - run: nix build .#devShells.x86_64-linux.default --accept-flake-config
 
   check:
     runs-on: ubuntu-latest
@@ -27,4 +35,8 @@ jobs:
         uses: actions/checkout@v4
       - name: install nix
         uses: cachix/install-nix-action@v23
-      - run: nix flake check
+        with:
+          name: opensource
+          authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+
+      - run: nix flake check --accept-flake-config