diff --git a/src/fiber_package/system/association.py b/src/fiber_package/system/association.py
index 857fcdf..29cb161 100644
--- a/src/fiber_package/system/association.py
+++ b/src/fiber_package/system/association.py
@@ -5,6 +5,8 @@ from fiber_package.refs import EntityRefList, CommitteeRefList, GuildRefList
 class AssociationModel(FiberBaseModel):
     full_name: str
     members: EntityRefList
+    alumni: EntityRefList
+    extern: EntityRefList
     committees: CommitteeRefList
     guilds: GuildRefList