diff --git a/captcha.png b/captcha.png
deleted file mode 100644
index ce1bfc1..0000000
Binary files a/captcha.png and /dev/null differ
diff --git a/package.json b/package.json
index bcff609..8da922a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "captcha-canvas",
-  "version": "3.0.3",
+  "version": "3.0.4",
   "description": "A captcha generator by using skia-canvas module.",
   "main": "./js-script/index.js",
   "files": [