diff --git a/.github/workflows/update-flake.yml b/.github/workflows/update-flake.yml
index 2f1eb8c6..64852866 100644
--- a/.github/workflows/update-flake.yml
+++ b/.github/workflows/update-flake.yml
@@ -14,7 +14,7 @@ jobs:
       - name: Install Nix
         uses: cachix/install-nix-action@v23
       - name: Update flake.lock
-        uses: DeterminateSystems/update-flake-lock@v20
+        uses: DeterminateSystems/update-flake-lock@v21
         with:
           token: ${{ secrets.GH_TOKEN_FOR_UPDATES }}
           pr-labels: dependencies