diff --git a/lib/index.js b/lib/index.js
index a903554..b6ce945 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -50,7 +50,7 @@ export async function checkUpdate(APPKEY) {
   });
 
   if (resp.status !== 200) {
-    throw new Error(resp.message);
+    throw new Error((await resp.json()).message);
   }
 
   return await resp.json();
diff --git a/package.json b/package.json
index 3fef74c..5f96229 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "react-native-update",
-  "version": "1.0.1",
+  "version": "1.0.3",
   "description": "react-native hot update",
   "main": "lib/index.js",
   "scripts": {
@@ -33,7 +33,7 @@
     "isomorphic-fetch": "^2.2.1",
     "mkdir-recursive": "^0.2.1",
     "node-apk-parser": "^0.2.3",
-    "node-bsdiff": "^0.1.3",
+    "node-bsdiff": "^0.1.4",
     "progress": "^1.1.8",
     "read": "^1.0.7",
     "request": "^2.69.0",