diff --git a/dist/qrcode.d.ts b/dist/qrcode.d.ts
index b34952e420da449f8e9b13f199ecc2f9a42033ec..b394c44fbff1ed3b7b89eec800387fae1d31d876 100644
--- a/dist/qrcode.d.ts
+++ b/dist/qrcode.d.ts
@@ -36,7 +36,7 @@ interface QRCodeFactory {
 }
 
 interface QRCode {
-  addData(data: string, mode?: Mode) : void;
+  addData(data: string | Uint8Array, mode?: Mode) : void;
   make() : void;
   getModuleCount() : number;
   isDark(row: number, col: number) : boolean;
diff --git a/dist/qrcode.js b/dist/qrcode.js
index df13f829bf41f36b82f0ed85751ed3b4c39cfeb8..7044b0ea8fc08d4a26915583ff068db09057c15a 100644
--- a/dist/qrcode.js
+++ b/dist/qrcode.js
@@ -1728,7 +1728,7 @@ var qrcode = function() {
 
     var _mode = QRMode.MODE_8BIT_BYTE;
     var _data = data;
-    var _bytes = qrcode.stringToBytes(data);
+    var _bytes = data instanceof Uint8Array ? data : qrcode.stringToBytes(data);
 
     var _this = {};
 
diff --git a/dist/qrcode.mjs b/dist/qrcode.mjs
index 444522524987df3a4e37c2a5150dc5c8a052bd44..86aeba510dea9f7e76a93df6f646aa030eb30e38 100644
--- a/dist/qrcode.mjs
+++ b/dist/qrcode.mjs
@@ -1722,7 +1722,7 @@ const qr8BitByte = function(data) {
 
   const _mode = QRMode.MODE_8BIT_BYTE;
   const _data = data;
-  const _bytes = qrcode.stringToBytes(data);
+  const _bytes = data instanceof Uint8Array ? data : qrcode.stringToBytes(data);
 
   const _this = {};