diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f8226e2..da525a6 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -15,6 +15,7 @@ jobs:
       # Setup
       - uses: actions/checkout@v5
       - uses: cachix/install-nix-action@v31
+      - uses: DeterminateSystems/magic-nix-cache-action@main
       - uses: subosito/flutter-action@v2 # TODO remove this once flutter is in flake
         with:
           channel: master