diff --git a/2019/12/webpack.md b/2019/12/webpack.md
index 3d92580..e7e7b22 100644
--- a/2019/12/webpack.md
+++ b/2019/12/webpack.md
@@ -12,4 +12,5 @@ yarn init 初始化
 
 yarn upgrade +xxx 升级
 
-2.
\ No newline at end of file
+所以，yarn 安装webpack 需要运行：yarn global add webpack
+