diff --git a/packages/rpc-provider/src/ws/Provider.ts b/packages/rpc-provider/src/ws/Provider.ts
index c23b7b6ab4..127a482134 100644
--- a/packages/rpc-provider/src/ws/Provider.ts
+++ b/packages/rpc-provider/src/ws/Provider.ts
@@ -150,7 +150,12 @@ export default class WsProvider implements ProviderInterface {
         ? new WS(this.#endpoints[this.#endpointIndex])
         // eslint-disable-next-line @typescript-eslint/ban-ts-comment
         // @ts-ignore - WS may be an instance of w3cwebsocket, which supports headers
-        : new WS(this.#endpoints[this.#endpointIndex], undefined, undefined, this.#headers);
+        : new WS(this.#endpoints[this.#endpointIndex], undefined, undefined, this.#headers, undefined, {
+          // default: true
+          fragmentOutgoingMessages: true,
+          // default: 16K
+          fragmentationThreshold: 256 * 1024
+        });
 
       this.#websocket.onclose = this.#onSocketClose;
       this.#websocket.onerror = this.#onSocketError;