diff --git a/.github/workflows/build-nix.yml b/.github/workflows/build-nix.yml
index 5147ab8538..295a19326b 100644
--- a/.github/workflows/build-nix.yml
+++ b/.github/workflows/build-nix.yml
@@ -23,7 +23,7 @@ jobs:
       - uses: actions/checkout@v4
       - name: Setup git lfs
         uses: ./.github/actions/setup-git-lfs
-      - uses: cachix/install-nix-action@v26
+      - uses: cachix/install-nix-action@V27
         with:
           install_url: https://releases.nixos.org/nix/nix-2.13.3/install
           extra_nix_config: |
diff --git a/.github/workflows/update-nix.yml b/.github/workflows/update-nix.yml
index a3a1514b03..9a128936de 100644
--- a/.github/workflows/update-nix.yml
+++ b/.github/workflows/update-nix.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v26
+      - uses: cachix/install-nix-action@V27
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -30,7 +30,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v26
+      - uses: cachix/install-nix-action@V27
         with:
           nix_path: nixpkgs=channel:nixos-unstable
           extra_nix_config: |