diff --git a/.github/workflows/cachix.yml b/.github/workflows/cachix.yml
index 66555e18..bf8e8dca 100644
--- a/.github/workflows/cachix.yml
+++ b/.github/workflows/cachix.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:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       - name: Cachix
@@ -29,7 +29,7 @@ jobs:
         os: [macos-latest, ubuntu-latest]
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v26
+      - uses: cachix/install-nix-action@V27
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       - name: Cachix
diff --git a/.github/workflows/dependencies.yml b/.github/workflows/dependencies.yml
index 8d3e36cd..91faf641 100644
--- a/.github/workflows/dependencies.yml
+++ b/.github/workflows/dependencies.yml
@@ -15,7 +15,7 @@ jobs:
       - uses: actions/checkout@v4
         with:
           token: ${{ secrets.PERSONAL_ACCESS_TOKEN }}
-      - uses: cachix/install-nix-action@v26
+      - uses: cachix/install-nix-action@V27
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
           nix_path: nixpkgs=channel:nixpkgs-unstable
diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index ea8412c6..036c8e46 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v26
+      - uses: cachix/install-nix-action@V27
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       - name: Cachix
@@ -31,7 +31,7 @@ jobs:
         os: [macos-latest, ubuntu-latest]
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v26
+      - uses: cachix/install-nix-action@V27
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       - name: Cachix
@@ -50,7 +50,7 @@ jobs:
       - uses: actions/checkout@v4
         with:
           token: ${{ secrets.PERSONAL_ACCESS_TOKEN }}
-      - uses: cachix/install-nix-action@v26
+      - uses: cachix/install-nix-action@V27
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       - name: Cachix