diff --git a/doc/api/examples/map.json b/doc/api/examples/map.json
index 20e63204..78711649 100644
--- a/doc/api/examples/map.json
+++ b/doc/api/examples/map.json
@@ -8,6 +8,7 @@
         "starred": false,
         "created_at": "2016-03-26T08:02:05.379Z",
         "updated_at": "2016-03-27T07:20:18.047Z",
+        "user_id": 1234,
         "topic_ids": [
             58,
             59
diff --git a/doc/api/examples/map_starred.json b/doc/api/examples/map_starred.json
index 59fa8252..4ac6c698 100644
--- a/doc/api/examples/map_starred.json
+++ b/doc/api/examples/map_starred.json
@@ -8,6 +8,7 @@
         "starred": true,
         "created_at": "2016-03-26T08:02:05.379Z",
         "updated_at": "2016-03-27T07:20:18.047Z",
+        "user_id": 1234,
         "topic_ids": [
             58,
             59
diff --git a/doc/api/examples/maps.json b/doc/api/examples/maps.json
index 501c0325..1e2a7baf 100644
--- a/doc/api/examples/maps.json
+++ b/doc/api/examples/maps.json
@@ -9,6 +9,7 @@
       "starred": false,
       "created_at": "2016-03-26T08:02:05.379Z",
       "updated_at": "2016-03-27T07:20:18.047Z",
+      "user_id": 1234,
       "topic_ids": [
         58,
         59
diff --git a/doc/api/schemas/_map.json b/doc/api/schemas/_map.json
index 1234122d..76586914 100644
--- a/doc/api/schemas/_map.json
+++ b/doc/api/schemas/_map.json
@@ -27,6 +27,9 @@
     "updated_at": {
       "$ref": "_datetimestamp.json"
     },
+    "user_id": {
+      "$ref": "_id.json"
+    },
     "topic_ids": {
       "type": "array",
       "items": {