diff --git a/.github/workflows/check.yaml b/.github/workflows/check.yaml
index 3365f85..44bb5c0 100644
--- a/.github/workflows/check.yaml
+++ b/.github/workflows/check.yaml
@@ -15,7 +15,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install Nix
-        uses: cachix/install-nix-action@V27
+        uses: cachix/install-nix-action@V28
         with:
           nix_path: nixpkgs=channel:nixos-unstable
 
diff --git a/.github/workflows/update.yaml b/.github/workflows/update.yaml
index 1e1af18..e7847e9 100644
--- a/.github/workflows/update.yaml
+++ b/.github/workflows/update.yaml
@@ -15,7 +15,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install Nix
-        uses: cachix/install-nix-action@V27
+        uses: cachix/install-nix-action@V28
         with:
           nix_path: nixpkgs=channel:nixos-unstable