From 73e89f79d9428e8bb789143b63ab54d0d77b1c23 Mon Sep 17 00:00:00 2001
From: asd <a374367073@126.com>
Date: Sun, 1 Dec 2019 15:46:01 +0800
Subject: [PATCH] update

---
 2019/12/webpack.md | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/2019/12/webpack.md b/2019/12/webpack.md
index 9a720d4..3d92580 100644
--- a/2019/12/webpack.md
+++ b/2019/12/webpack.md
@@ -4,9 +4,12 @@ yarn add   安装
 
 yarn global add 全局安装
 
-yarn 
+yarn add 软件包名+@版本号  指定版本安装
 
 yarn remove +xxx  移除
 
 yarn init 初始化
 
+yarn upgrade +xxx 升级
+
+2.
\ No newline at end of file