diff --git a/web3.js/src/connection.ts b/web3.js/src/connection.ts
index bcc69ffd24..50fc8c2201 100644
--- a/web3.js/src/connection.ts
+++ b/web3.js/src/connection.ts
@@ -191,9 +191,9 @@ type Subscription = BaseSubscription &
   StatefulSubscription &
   DistributiveOmit<SubscriptionConfig, 'callback'>;
 
-type RpcRequest = (methodName: string, args: Array<any>) => any;
+type RpcRequest = (methodName: string, args: Array<any>) => Promise<any>;
 
-type RpcBatchRequest = (requests: RpcParams[]) => any;
+type RpcBatchRequest = (requests: RpcParams[]) => Promise<any[]>;
 
 /**
  * @internal