diff --git a/.github/workflows/sync_upstream.yml b/.github/workflows/sync_upstream.yml
index 50fc81b5..e24a4064 100644
--- a/.github/workflows/sync_upstream.yml
+++ b/.github/workflows/sync_upstream.yml
@@ -15,7 +15,10 @@ jobs:
 
       - name: Sync upstream
         run: |
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git config user.name "github-actions[bot]"
           git remote add upstream https://github.com/gchq/CyberChef.git
           git fetch upstream
           git merge upstream/master
           git push origin master
+