diff --git a/Maca3.0.md b/Maca3.0.md
index 1de2cc7..37001ed 100644
--- a/Maca3.0.md
+++ b/Maca3.0.md
@@ -76,6 +76,6 @@
 - **适配所有 Ubuntu 系统**
 
    ```bash
-   curl -fsSL https://mirror.metax-internal.com/public.gpg.key | apt-key add -
+   curl -fsSL https://mirror.metax-tech.com/public.gpg.key | apt-key add -
    echo "deb [arch=$(dpkg --print-architecture)] https://mirror.metax-tech.com/metax-driver-ubuntu/ stable main" | tee /etc/apt/sources.list.d/metax-driver-ubuntu.list
    apt-get update
\ No newline at end of file