diff --git a/.gitea/workflows/update.yml b/.gitea/workflows/update.yml
index 0bca0b8..89bf31a 100644
--- a/.gitea/workflows/update.yml
+++ b/.gitea/workflows/update.yml
@@ -21,7 +21,7 @@ jobs:
           extra_nix_config: |
             experimental-features = nix-command flakes            
       - name: Update flake.lock
-        uses: DeterminateSystems/update-flake-lock@v20
+        uses: DeterminateSystems/update-flake-lock@v21
         with:
           token: ${{ secrets.GT_TOKEN_FOR_UPDATES }}
           pr-title: "[chore] Update flake.lock"