1 files changed, 5 insertions, 0 deletions
diff --git a/app/services/merge_requests/post_merge_service.rb b/app/services/merge_requests/post_merge_service.rb
index c78e78afcd1..5b160ffba67 100644
--- a/app/services/merge_requests/post_merge_service.rb
+++ b/app/services/merge_requests/post_merge_service.rb
@@ -15,6 +15,7 @@ module MergeRequests
       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