diff --git a/.github/workflows/check-dead-links.yml b/.github/workflows/check-dead-links.yml
index 7acb455..a9eb4f3 100644
--- a/.github/workflows/check-dead-links.yml
+++ b/.github/workflows/check-dead-links.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v27
+      - uses: cachix/install-nix-action@v29
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - run: ./checks/linkcheck/lychee.sh
diff --git a/.github/workflows/update-extensions.yml b/.github/workflows/update-extensions.yml
index 97fdbba..58ef856 100644
--- a/.github/workflows/update-extensions.yml
+++ b/.github/workflows/update-extensions.yml
@@ -14,7 +14,7 @@ jobs:
       - uses: actions/checkout@v4
         with:
           submodules: true
-      - uses: cachix/install-nix-action@v27
+      - uses: cachix/install-nix-action@v29
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - run: ./modules/nixos-wiki/update-extensions.py ./modules/nixos-wiki/extensions.json