diff --git a/src/client_hook.ts b/src/client_hook.ts
index a93b142..bd06539 100644
--- a/src/client_hook.ts
+++ b/src/client_hook.ts
@@ -3,5 +3,5 @@ import { useRequestContext } from './request_context';
 export function useClient() {
     const { client } = useRequestContext();
 
-    return [client];
+    return [client] as const;
 }