diff --git a/Maca3.0.md b/Maca3.0.md
index 3122714..468ac63 100644
--- a/Maca3.0.md
+++ b/Maca3.0.md
@@ -32,7 +32,7 @@
 2. **添加仓库并更新缓存**
 
    ```bash
-   curl -fsSL https://mirror.metax-tech.com/nexus_pub.asc | apt-key add -
+   curl -fsSL https://mirror.metax-tech.com/public.gpg.key | apt-key add -
    echo "deb [arch=$(dpkg --print-architecture)] https://mirrors.metax-tech.com/r/maca-sdk-deb/ stable main" | tee /etc/apt/sources.list.d/maca-sdk-deb.list
    apt-get update