diff --git a/sockette.d.ts b/sockette.d.ts
index a61ebe2..6ff2779 100644
--- a/sockette.d.ts
+++ b/sockette.d.ts
@@ -12,6 +12,7 @@ declare module "sockette" {
 		protocols?: string | string[];
 		timeout?: number;
 		maxAttempts?: number;
+		binaryType?: BinaryType;
 		onopen?: (this: Sockette, ev: Event) => any;
 		onmessage?: (this: Sockette, ev: MessageEvent) => any;
 		onreconnect?: (this: Sockette, ev: Event | CloseEvent) => any;
diff --git a/src/index.js b/src/index.js
index 594bd8a..406783c 100644
--- a/src/index.js
+++ b/src/index.js
@@ -9,6 +9,8 @@ export default function (url, opts) {
 	$.open = function () {
 		ws = new WebSocket(url, opts.protocols || []);
 
+		ws.binaryType = opts.binaryType || 'blob';
+
 		ws.onmessage = opts.onmessage || noop;
 
 		ws.onopen = function (e) {