From 0176833e20b5a41c1fc77c1549ab37b8756949d3 Mon Sep 17 00:00:00 2001
From: Su Xing <xsu1989@foxmail.com>
Date: Fri, 17 Mar 2023 09:57:29 +0800
Subject: [PATCH] Update README

---
 README.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 27b5e69..466d442 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,8 @@
 SysY编译器前端基于[ANTLR](https://www.antlr.org/index.html)工具实现，本仓库已经包含ANTLR 4.9.3版本的可执行程序与C++运行时库，但编译ANTLR运行时库存在一些依赖，需要提前安装。
 
 ```bash
-sudo apt install uuid-dev libutfcpp-dev pkg-config python3-pip make git
+sudo apt update
+sudo apt install -y uuid-dev libutfcpp-dev pkg-config python3-pip make git
 pip3 install cmake
 ```