diff --git a/.github/workflows/github_pages.yml b/.github/workflows/github_pages.yml
index 2dee0786..53b58450 100644
--- a/.github/workflows/github_pages.yml
+++ b/.github/workflows/github_pages.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v4
-    - uses: cachix/install-nix-action@v23
+    - uses: cachix/install-nix-action@V27
       with:
         nix_path: nixpkgs=channel:nixos-unstable
     - uses: cachix/cachix-action@v15
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 8f32e660..c4bfd785 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v4
-    - uses: cachix/install-nix-action@v23
+    - uses: cachix/install-nix-action@V27
       with:
         nix_path: nixpkgs=channel:nixos-24.05
     - run: |
diff --git a/.github/workflows/update-flake.yml b/.github/workflows/update-flake.yml
index 64852866..98879d71 100644
--- a/.github/workflows/update-flake.yml
+++ b/.github/workflows/update-flake.yml
@@ -12,7 +12,7 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
       - name: Install Nix
-        uses: cachix/install-nix-action@v23
+        uses: cachix/install-nix-action@V27
       - name: Update flake.lock
         uses: DeterminateSystems/update-flake-lock@v21
         with: