1 files changed, 6 insertions, 1 deletions
diff --git a/app/services/merge_requests/post_merge_service.rb b/app/services/merge_requests/post_merge_service.rb
index c78e78afcd1..7606d68ff29 100644
--- a/app/services/merge_requests/post_merge_service.rb
+++ b/app/services/merge_requests/post_merge_service.rb
@@ -6,15 +6,16 @@ module MergeRequests
   #
   class PostMergeService < MergeRequests::BaseService
     def execute(merge_request)
+      merge_request.mark_as_merged
       close_issues(merge_request)
       todo_service.merge_merge_request(merge_request, current_user)
-      merge_request.mark_as_merged
       create_event(merge_request)
       create_note(merge_request)
       notification_service.merge_mr(merge_request, current_user)
       execute_hooks(merge_request, 'merge')
       invalidate_cache_counts(merge_request, users: merge_request.assignees)
       merge_request.update_project_counter_caches
+      delete_non_latest_diffs(merge_request)
     end
 
     private
@@ -31,6 +32,10 @@ module MergeRequests
       end
     end
 
+    def delete_non_latest_diffs(merge_request)
+      DeleteNonLatestDiffsService.new(merge_request).execute
+    end
+
     def create_merge_event(merge_request, current_user)
       EventCreateService.new.merge_mr(merge_request, current_user)
     end