diff --git a/_posts/help/1970-01-01-anaconda.md b/_posts/help/1970-01-01-anaconda.md
index 26a0074..f16158b 100644
--- a/_posts/help/1970-01-01-anaconda.md
+++ b/_posts/help/1970-01-01-anaconda.md
@@ -18,7 +18,7 @@ channels:
 show_channel_urls: true
 default_channels:
   - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
-	- https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free
+  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free
   - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/r
 custom_channels:
   conda-forge: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
@@ -26,7 +26,7 @@ custom_channels:
   bioconda: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
   menpo: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
   pytorch: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
-	simpleitk: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
+  simpleitk: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
 ```
 
 即可添加 Anaconda Python 免费仓库。Windows 用户无法直接创建名为 `.condarc` 的文件，可先执行 `conda config --set show_channel_urls yes` 生成该文件之后再修改。