diff --git a/.github/workflows/upgrade-flakes.yml b/.github/workflows/upgrade-flakes.yml
index 34fc9a6..45edd33 100644
--- a/.github/workflows/upgrade-flakes.yml
+++ b/.github/workflows/upgrade-flakes.yml
@@ -21,4 +21,4 @@ jobs:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
       - name: Update flake.lock
-        uses: DeterminateSystems/update-flake-lock@v27
+        uses: DeterminateSystems/update-flake-lock@v28