diff --git a/package.json b/package.json
index 603f4c3..63a21cd 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "hexo-theme-butterfly",
-  "version": "2.3.5",
+  "version": "3.0.0",
   "private": true,
   "engines": {
     "node": ">=8.10.0"
diff --git a/source/js/third-party/canvas-ribbon.js b/source/js/third-party/canvas-ribbon.js
index 76a96ce..6ed6535 100644
--- a/source/js/third-party/canvas-ribbon.js
+++ b/source/js/third-party/canvas-ribbon.js
@@ -15,7 +15,7 @@
     return;
   }
 
-  config = {
+  var config = {
     z: attr(script, "zIndex", -1), // z-index
     a: attr(script, "alpha", 0.6), // alpha
     s: attr(script, "size", 90), // size