diff --git a/generated_types.json b/generated_types.json
index 705da049..bd27e056 100644
--- a/generated_types.json
+++ b/generated_types.json
@@ -6549,7 +6549,7 @@
               "type": "string",
               "format": "uuid"
             },
-            "description": "Sorted ids of active projects in this project group"
+            "description": "Sorted ids of active projects in this project group. Modifying membership requires project_group:update on the group."
           }
         },
         "required": [
@@ -6558,7 +6558,7 @@
           "name",
           "member_projects"
         ],
-        "description": "A project group is a collection of projects which can inherit access from project-group ACLs"
+        "description": "A project group is a collection of projects which inherit access from project_group_projects ACLs. The group's definition and membership are governed separately by project_group ACLs."
       },
       "ProjectLogsEvent": {
         "type": "object",
diff --git a/py/src/braintrust/_generated_types.py b/py/src/braintrust/_generated_types.py
index 88f5105b..927c0242 100644
--- a/py/src/braintrust/_generated_types.py
+++ b/py/src/braintrust/_generated_types.py
@@ -2071,7 +2071,7 @@ class ProjectGroup(TypedDict):
     """
     member_projects: Sequence[str]
     """
-    Sorted ids of active projects in this project group
+    Sorted ids of active projects in this project group. Modifying membership requires project_group:update on the group.
     """
 
 
diff --git a/py/src/braintrust/generated_types.py b/py/src/braintrust/generated_types.py
index 9292e8b8..6a85061f 100644
--- a/py/src/braintrust/generated_types.py
+++ b/py/src/braintrust/generated_types.py
@@ -1,4 +1,4 @@
-"""Auto-generated file (content hash 87319a2be5c083ea) -- do not modify"""
+"""Auto-generated file (content hash 0be62f5b82c14787) -- do not modify"""
 
 from ._generated_types import (
     Acl,