diff --git a/appengine/standard/ndb/schema_update/models_v1.py b/appengine/standard/ndb/schema_update/models_v1.py
index ea84bc9b869..cf13cede649 100644
--- a/appengine/standard/ndb/schema_update/models_v1.py
+++ b/appengine/standard/ndb/schema_update/models_v1.py
@@ -15,6 +15,8 @@
 from google.appengine.ext import ndb
 
 
+# [START: models_v1]
 class Picture(ndb.Model):
     author = ndb.StringProperty()
     name = ndb.StringProperty(default='')
+# [END: models_v1]
diff --git a/appengine/standard/ndb/schema_update/models_v2.py b/appengine/standard/ndb/schema_update/models_v2.py
index 8f2c79ff3c6..b8330241185 100644
--- a/appengine/standard/ndb/schema_update/models_v2.py
+++ b/appengine/standard/ndb/schema_update/models_v2.py
@@ -15,9 +15,11 @@
 from google.appengine.ext import ndb
 
 
+# [START: models_v2]
 class Picture(ndb.Model):
     author = ndb.StringProperty()
     name = ndb.StringProperty(default='')
     # Two new fields
     num_votes = ndb.IntegerProperty(default=0)
     avg_rating = ndb.FloatProperty(default=0)
+# [END: models_v2]