diff --git a/doc/api/merge_requests.md b/doc/api/merge_requests.md
index a8c3b068d22..e00882e6d5d 100644
--- a/doc/api/merge_requests.md
+++ b/doc/api/merge_requests.md
@@ -276,6 +276,7 @@ Parameters:
 ```json
 {
   "id": 1,
+  "iid": 1,
   "target_branch": "master",
   "source_branch": "test1",
   "project_id": 3,
@@ -350,6 +351,7 @@ Parameters:
 ```json
 {
   "id": 1,
+  "iid": 1,
   "target_branch": "master",
   "project_id": 3,
   "title": "test1",
@@ -449,6 +451,7 @@ Parameters:
 ```json
 {
   "id": 1,
+  "iid": 1,
   "target_branch": "master",
   "source_branch": "test1",
   "project_id": 3,
@@ -517,6 +520,7 @@ Parameters:
 ```json
 {
   "id": 1,
+  "iid": 1,
   "target_branch": "master",
   "source_branch": "test1",
   "project_id": 3,