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README.md

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 [![Gitter](https://badges.gitter.im/mamoe/mirai.svg)](https://gitter.im/mamoe/mirai?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
-[![Actions Status](https://github.com/mamoe/mirai/workflows/CI/badge.svg)](https://github.com/mamoe/mirai/actions)
+[![Actions Status](https://github.com/mamoe/mirai/workflows/CI/badge.svg?branch=master)](https://github.com/mamoe/mirai/actions)
 [![Download](https://api.bintray.com/packages/him188moe/mirai/mirai-core/images/download.svg)](https://bintray.com/him188moe/mirai/mirai-core/)  
 
 Mirai 是一个在全平台下运行，提供 QQ Android 和 TIM PC 协议支持的高效率机器人框架