diff --git a/lib/components/ens-cache-provider.react.js b/lib/components/ens-cache-provider.react.js
--- a/lib/components/ens-cache-provider.react.js
+++ b/lib/components/ens-cache-provider.react.js
@@ -9,6 +9,8 @@
   type GetENSNames,
 } from '../utils/ens-helpers.js';
 
+type BaseUserInfo = { +username?: ?string, ... };
+
 type ENSCacheContextType = {
   +ensCache: ?ENSCache,
   +getENSNames: ?GetENSNames,
@@ -31,7 +33,9 @@
       return defaultContext;
     }
     const ensCache = new ENSCache(provider);
-    const getENSNames: GetENSNames = baseGetENSNames.bind(null, ensCache);
+    const getENSNames: GetENSNames = <T: ?BaseUserInfo>(
+      users: $ReadOnlyArray<T>,
+    ): Promise<T[]> => baseGetENSNames(ensCache, users);
     return { ensCache, getENSNames };
   }, [provider]);
   return (