diff --git a/otterdog/eclipse-jdt.jsonnet b/otterdog/eclipse-jdt.jsonnet
index 6e2aa27..867957d 100644
--- a/otterdog/eclipse-jdt.jsonnet
+++ b/otterdog/eclipse-jdt.jsonnet
@@ -29,7 +29,7 @@ orgs.newOrg('eclipse-jdt') {
   ],
   _repositories+:: [
     orgs.newRepo('.github') {
-      allow_merge_commit: true,
+      allow_merge_commit: false,
       delete_branch_on_merge: false,
       web_commit_signoff_required: false,
       workflows+: {