diff --git a/.github/workflows/check-nix-flake-update.yml b/.github/workflows/check-nix-flake-update.yml
index 6426366..77e0939 100644
--- a/.github/workflows/check-nix-flake-update.yml
+++ b/.github/workflows/check-nix-flake-update.yml
@@ -27,6 +27,6 @@ jobs:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Update flake.lock file(s)
-        uses: DeterminateSystems/update-flake-lock@v27
+        uses: DeterminateSystems/update-flake-lock@v28
         with:
           pr-title: "Update Nix flake inputs"