diff --git a/web/modals/threads/members/members-modal.react.js b/web/modals/threads/members/members-modal.react.js
--- a/web/modals/threads/members/members-modal.react.js
+++ b/web/modals/threads/members/members-modal.react.js
@@ -5,11 +5,7 @@
 import { useModalContext } from 'lib/components/modal-provider.react.js';
 import { threadInfoSelector } from 'lib/selectors/thread-selectors.js';
 import { userStoreSearchIndex } from 'lib/selectors/user-selectors.js';
-import {
-  memberHasAdminPowers,
-  memberIsAdmin,
-  threadHasPermission,
-} from 'lib/shared/thread-utils.js';
+import { threadHasPermission } from 'lib/shared/thread-utils.js';
 import { threadPermissions } from 'lib/types/thread-permission-types.js';
 import { type RelativeMemberInfo } from 'lib/types/thread-types.js';
 
@@ -20,6 +16,7 @@
 import Tabs from '../../../components/tabs.react.js';
 import { useSelector } from '../../../redux/redux-utils.js';
 import SearchModal from '../../search-modal.react.js';
+import { useRoleNamesFromCommunityThreadInfo } from 'lib/utils/role-utils.js';
 
 type ContentProps = {
   +searchText: string,
@@ -47,13 +44,18 @@
       ),
     [searchText.length, threadMembersNotFiltered, userIDs],
   );
+
+  const adminMembersMap = useRoleNamesFromCommunityThreadInfo(
+    threadInfo,
+    allMembers,
+  );
   const adminMembers = React.useMemo(
     () =>
       allMembers.filter(
         (member: RelativeMemberInfo) =>
-          memberIsAdmin(member, threadInfo) || memberHasAdminPowers(member),
+          adminMembersMap.get(member.id) === 'Admins',
       ),
-    [allMembers, threadInfo],
+    [adminMembersMap, allMembers],
   );
 
   const allUsersTab = React.useMemo(