diff --git a/MACA.md b/MACA.md
index 5df035f..89fd7fc 100644
--- a/MACA.md
+++ b/MACA.md
@@ -43,6 +43,7 @@
 
 ### 适配所有 Ubuntu 系统
 
+- **配置APT源**
    ```bash
    curl -fsSL https://repos.metax-tech.com/public.gpg.key | apt-key add -
    echo "deb [arch=$(dpkg --print-architecture)] https://repos.metax-tech.com/r/maca-sdk-deb/ stable main" | tee /etc/apt/sources.list.d/maca-sdk-deb.list