diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 07af4db..515c10e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,6 +13,6 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: DeterminateSystems/nix-installer-action@v16
-      - uses: DeterminateSystems/magic-nix-cache-action@v8
+      - uses: DeterminateSystems/magic-nix-cache-action@v13
       - run: nix flake check --impure
       - run: nix build --impure .#vm
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 1d3101f..0279916 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -15,7 +15,7 @@ jobs:
         with:
           fetch-depth: 0
       - uses: DeterminateSystems/nix-installer-action@v16
-      - uses: DeterminateSystems/magic-nix-cache-action@v8
+      - uses: DeterminateSystems/magic-nix-cache-action@v13
       - run: nix build --impure .#vm
       - name: Create GitHub Release
         env: