diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 8d4c910..17b3668 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - uses: cachix/install-nix-action@v26
+    - uses: cachix/install-nix-action@V27
     - name: Add keys group (needed for go tests)
       run: sudo groupadd keys
     - name: Run unit tests
diff --git a/.github/workflows/update-vendor-hash.yml b/.github/workflows/update-vendor-hash.yml
index 229c399..fa351c2 100644
--- a/.github/workflows/update-vendor-hash.yml
+++ b/.github/workflows/update-vendor-hash.yml
@@ -14,7 +14,7 @@ jobs:
           ref: ${{ github.event.pull_request.head.sha }}
           fetch-depth: 0
       - name: Install Nix
-        uses: cachix/install-nix-action@v26
+        uses: cachix/install-nix-action@V27
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
           nix_path: nixpkgs=channel:nixos-unstable
diff --git a/.github/workflows/upgrade-flakes.yml b/.github/workflows/upgrade-flakes.yml
index 93a7eec..7a8ff5b 100644
--- a/.github/workflows/upgrade-flakes.yml
+++ b/.github/workflows/upgrade-flakes.yml
@@ -10,7 +10,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Install Nix
-        uses: cachix/install-nix-action@v26
+        uses: cachix/install-nix-action@V27
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}