diff --git a/.github/workflows/test-flakes.yml b/.github/workflows/test-flakes.yml
index a6a562d..5501a87 100644
--- a/.github/workflows/test-flakes.yml
+++ b/.github/workflows/test-flakes.yml
@@ -21,7 +21,7 @@ jobs:
           experimental-features = nix-command flakes
           system-features = nixos-test benchmark big-parallel kvm
     - name: Setup cachix
-      uses: cachix/cachix-action@v8
+      uses: cachix/cachix-action@v9
       with:
         name: mic92
         signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index dbcef30..1c4594c 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -19,7 +19,7 @@ jobs:
         nix_path: "${{ matrix.nixPath }}"
         extra_nix_config: "system-features = nixos-test benchmark big-parallel kvm"
     - name: Setup cachix
-      uses: cachix/cachix-action@v8
+      uses: cachix/cachix-action@v9
       with:
         name: mic92
         signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'