diff --git a/help/_posts/1970-01-01-pypi.md b/help/_posts/1970-01-01-pypi.md
index 5b019ac..7aa0323 100644
--- a/help/_posts/1970-01-01-pypi.md
+++ b/help/_posts/1970-01-01-pypi.md
@@ -22,13 +22,13 @@ pip install -i https://{{ site.pypi }}/simple some-package
 
 ```
 python -m pip install --upgrade pip
-pip config set global.extra-index-url https://{{ site.pypi }}/simple
+pip config set global.index-url https://{{ site.pypi }}/simple
 ```
 
 如果您到 pip 默认源的网络连接较差，临时使用本镜像站来升级 pip：
 
 ```
-python -m pip install --extra-index-url https://{{ site.pypi }}/simple --upgrade pip
+python -m pip install -i https://{{ site.pypi }}/simple --upgrade pip
 ```
 
 ### 配置多个镜像源