diff --git a/bigquery/google/cloud/bigquery/dataset.py b/bigquery/google/cloud/bigquery/dataset.py
index 02664d87b153..99c47026fe3a 100644
--- a/bigquery/google/cloud/bigquery/dataset.py
+++ b/bigquery/google/cloud/bigquery/dataset.py
@@ -123,7 +123,7 @@ class AccessEntry(object):
     """
 
     ENTITY_TYPES = frozenset(
-        ["userByEmail", "groupByEmail", "domain", "specialGroup", "view"]
+        ["userByEmail", "groupByEmail", "domain", "specialGroup", "view", "iamMember"]
     )
     """Allowed entity types."""