diff --git a/.github/workflows/github_pages.yml b/.github/workflows/github_pages.yml
index 59a47e16..0ac438f2 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@v3
-    - uses: cachix/install-nix-action@v20
+    - uses: cachix/install-nix-action@v21
       with:
         install_url: https://releases.nixos.org/nix/nix-2.13.3/install
         nix_path: nixpkgs=channel:nixos-unstable
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 4517d22f..4bd0a897 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v3
-    - uses: cachix/install-nix-action@v20
+    - uses: cachix/install-nix-action@v21
       with:
         install_url: https://releases.nixos.org/nix/nix-2.13.3/install
         nix_path: nixpkgs=channel:nixos-22.11
diff --git a/.github/workflows/update-flake.yml b/.github/workflows/update-flake.yml
index 5b7fd3b6..f1b020f5 100644
--- a/.github/workflows/update-flake.yml
+++ b/.github/workflows/update-flake.yml
@@ -12,7 +12,7 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v3
       - name: Install Nix
-        uses: cachix/install-nix-action@v20
+        uses: cachix/install-nix-action@v21
         with:
           install_url: https://releases.nixos.org/nix/nix-2.13.3/install
       - name: Update flake.lock