diff --git a/.github/workflows/check-flake.yml b/.github/workflows/check-flake.yml
index 4c962bb5..9d4786f4 100644
--- a/.github/workflows/check-flake.yml
+++ b/.github/workflows/check-flake.yml
@@ -9,7 +9,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v25
+      - uses: cachix/install-nix-action@v30
         with:
           install_url: https://nixos.org/nix/install
           extra_nix_config: |
diff --git a/.github/workflows/update-flake.yml b/.github/workflows/update-flake.yml
index c1b638e2..5d3be5b8 100644
--- a/.github/workflows/update-flake.yml
+++ b/.github/workflows/update-flake.yml
@@ -20,7 +20,7 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
       - name: Install Nix
-        uses: cachix/install-nix-action@v25
+        uses: cachix/install-nix-action@v30
         with:
           install_url: https://nixos.org/nix/install
           extra_nix_config: |