diff --git a/.github/workflows/automerge.yml b/.github/workflows/automerge.yml
index c58b887..7f4fbb3 100644
--- a/.github/workflows/automerge.yml
+++ b/.github/workflows/automerge.yml
@@ -9,7 +9,7 @@ permissions:
 jobs:
   automerge:
     runs-on: ubuntu-latest
-    if: github.actor == 'dependabot[bot]'
+    if: github.actor == 'dependabot[bot]' || (github.event.pull_request.user.id == github.repository.owner.id && github.event.pull_request.title == 'Update flake.lock'
     steps:
       - name: Enable Pull Request Automerge
         run: gh pr merge --squash --auto --repo "${{ github.repository }}" "${{ github.event.pull_request.number }}"
diff --git a/.github/workflows/flake_update.yml b/.github/workflows/flake_update.yml
index e853335..15b6007 100644
--- a/.github/workflows/flake_update.yml
+++ b/.github/workflows/flake_update.yml
@@ -32,3 +32,6 @@ jobs:
             ```
             {{ env.GIT_COMMIT_MESSAGE }}
             ```
+          token: ${{ secrets.GH_PAT }}
+          sign-commits: true
+          gpg-private-key: ${{ secrets.GPG_PRIVATE_KEY }}