diff --git a/spec/fixtures/api/schemas/entities/merge_request.json b/spec/fixtures/api/schemas/entities/merge_request.json
index 2f12b671dec..1030f323a1f 100644
--- a/spec/fixtures/api/schemas/entities/merge_request.json
+++ b/spec/fixtures/api/schemas/entities/merge_request.json
@@ -18,6 +18,8 @@
     "total_time_spent": { "type": "integer" },
     "human_time_estimate": { "type": ["integer", "null"] },
     "human_total_time_spent": { "type": ["integer", "null"] },
+    "milestone": { "type": ["object", "null"] },
+    "labels": { "type": ["array", "null"] },
     "in_progress_merge_commit_sha": { "type": ["string", "null"] },
     "merge_error": { "type": ["string", "null"] },
     "merge_commit_sha": { "type": ["string", "null"] },