diff --git a/README.md b/README.md
index f2203a1..7e3af62 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,6 @@
 [![API](https://img.shields.io/badge/API-23%2B-brightgreen.svg?style=flat)](https://android-arsenal.com/api?level=23)
 [![Releases](https://img.shields.io/github/downloads/shadowsocks/v2ray-plugin-android/total.svg)](https://github.com/shadowsocks/v2ray-plugin-android/releases)
 [![Language: Kotlin](https://img.shields.io/github/languages/top/shadowsocks/v2ray-plugin-android.svg)](https://github.com/shadowsocks/v2ray-plugin-android/search?l=kotlin)
-[![Codacy Badge](https://api.codacy.com/project/badge/Grade/46b34df6fe624ef9a46507126f407880)](https://www.codacy.com/app/shadowsocks/v2ray-plugin-android?utm_source=github.com&utm_medium=referral&utm_content=shadowsocks/v2ray-plugin-android&utm_campaign=Badge_Grade)
 [![License](https://img.shields.io/github/license/shadowsocks/v2ray-plugin-android.svg)](https://github.com/shadowsocks/v2ray-plugin-android/blob/master/LICENSE)
 
 [<img src="https://fdroid.gitlab.io/artwork/badge/get-it-on.png"
@@ -17,7 +16,7 @@
 ### PREREQUISITES
 
 * JDK 1.8
-* Go 1.15+
+* Go 1.17+
 * Android SDK
   - Android NDK r19+