diff --git a/.github/workflows/build_documentation.yml b/.github/workflows/build_documentation.yml
index f9625b25..85209422 100644
--- a/.github/workflows/build_documentation.yml
+++ b/.github/workflows/build_documentation.yml
@@ -36,7 +36,7 @@ jobs:
 
     steps:
       - name: Install nix
-        uses: cachix/install-nix-action@v26
+        uses: cachix/install-nix-action@30
         with:
           nix_path: nixpkgs=channel:nixos-unstable
 
diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index d3eb65e5..0f1c9434 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -51,7 +51,7 @@ jobs:
           gh workflow run update.yml --ref nixos-24.05
 
       - name: Install Nix
-        uses: cachix/install-nix-action@v26
+        uses: cachix/install-nix-action@30
         with:
           nix_path: nixpkgs=channel:nixos-unstable
           github_access_token: ${{ secrets.GITHUB_TOKEN }}