diff --git a/.github/workflows/reusable-update-nix-flake-public.yml b/.github/workflows/reusable-update-nix-flake-public.yml
index ea4ea8f..b9c1b0c 100644
--- a/.github/workflows/reusable-update-nix-flake-public.yml
+++ b/.github/workflows/reusable-update-nix-flake-public.yml
@@ -29,7 +29,7 @@ jobs:
         uses: chainguard-dev/actions/setup-gitsign@main
 
       - name: Update Nix dependencies.
-        uses: DeterminateSystems/update-flake-lock@v27
+        uses: DeterminateSystems/update-flake-lock@v28
         with:
           commit-msg: "chore(nix): Update dependencies."
           branch: "chore/update-nix-dependencies"