diff --git a/.github/workflows/cachix.yml b/.github/workflows/cachix.yml
index e142d46..9808c64 100644
--- a/.github/workflows/cachix.yml
+++ b/.github/workflows/cachix.yml
@@ -21,6 +21,7 @@ jobs:
     - uses: cachix/install-nix-action@v26
       with:
         github_access_token: ${{ secrets.GITHUB_TOKEN }}
+    - uses: DeterminateSystems/magic-nix-cache-action@main
     - name: Install nix-fast-build
       # NOTE: Don't use 'nix run' for nix-fast-build. We don't want to cache the nix-fast-build derivation.
       run: nix profile install github:Mic92/nix-fast-build
diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index d96774e..dc58569 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -17,6 +17,7 @@ jobs:
         uses: cachix/install-nix-action@v26
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
+      - uses: DeterminateSystems/magic-nix-cache-action@main
       - name: Install nix-fast-build
         # NOTE: Don't use 'nix run' for nix-fast-build. We don't want to cache the nix-fast-build derivation.
         run: nix profile install github:Mic92/nix-fast-build