diff --git a/.github/workflows/build_nix.yml b/.github/workflows/build_nix.yml
index 45eda6d..f39481d 100644
--- a/.github/workflows/build_nix.yml
+++ b/.github/workflows/build_nix.yml
@@ -27,7 +27,7 @@ jobs:
     steps:
 
       - name: Install Nix
-        uses: cachix/install-nix-action@v26
+        uses: cachix/install-nix-action@V27
 
       - name: Checkout Repository
         uses: actions/checkout@v4
diff --git a/.github/workflows/update_nix.yml b/.github/workflows/update_nix.yml
index 2169acc..84df09a 100644
--- a/.github/workflows/update_nix.yml
+++ b/.github/workflows/update_nix.yml
@@ -12,7 +12,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install Nix
-        uses: cachix/install-nix-action@v26
+        uses: cachix/install-nix-action@V27
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}