diff --git a/ts/textsecure/WebsocketResources.ts b/ts/textsecure/WebsocketResources.ts
index 5fdd60ee64..80ae18f070 100644
--- a/ts/textsecure/WebsocketResources.ts
+++ b/ts/textsecure/WebsocketResources.ts
@@ -41,7 +41,7 @@ import * as Timers from '../Timers';
 
 const THIRTY_SECONDS = 30 * durations.SECOND;
 
-const MAX_MESSAGE_SIZE = 256 * 1024;
+const MAX_MESSAGE_SIZE = 512 * 1024;
 
 export class IncomingWebSocketRequest {
   private readonly id: Long;