diff --git a/README.md b/README.md
index f1dfee6..d05c310 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ A command-line tool for tweaking WeChat.
 brew install sunnyyoung/tap/wechattweak
 
 # 更新
-brew upgrade wechattweak
+brew upgrade sunnyyoung/tap/wechattweak
 
 # 执行 Patch
 wechattweak patch