diff --git a/.github/workflows/update-dependencies.yaml b/.github/workflows/update-dependencies.yaml
index 5505e5f..c4fd5bd 100644
--- a/.github/workflows/update-dependencies.yaml
+++ b/.github/workflows/update-dependencies.yaml
@@ -38,6 +38,7 @@ jobs:
           title: Update dependencies
           delete-branch: true
       - name: Enable auto merge
+        if: steps.create-pull-request.outputs.pull-request-operation == 'created'
         uses: peter-evans/enable-pull-request-automerge@v2
         with:
           # Can't use the fine-grained token here because they don't have access to the GraphQL API.