diff --git a/lib/types/minimally-encoded-thread-permissions-types.js b/lib/types/minimally-encoded-thread-permissions-types.js
--- a/lib/types/minimally-encoded-thread-permissions-types.js
+++ b/lib/types/minimally-encoded-thread-permissions-types.js
@@ -164,7 +164,9 @@
 export type ThinRawThreadInfo = $ReadOnly<{
   ...LegacyThinRawThreadInfo,
   +minimallyEncoded: true,
-  +members: $ReadOnlyArray<MemberInfoSansPermissions>,
+  +members:
+    | $ReadOnlyArray<MemberInfoSansPermissions>
+    | $ReadOnlyArray<MemberInfoWithPermissions>,
   +roles: { +[id: string]: RoleInfo },
   +currentUser: ThreadCurrentUserInfo,
 }>;