From cc65bd54461c52ded33555febbe7c13d969cf8be Mon Sep 17 00:00:00 2001
From: windowsair <msdn_02@sina.com>
Date: Thu, 12 Nov 2020 13:31:42 +0800
Subject: [PATCH] fix: try to fix ci package not found issue

---
 .travis.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.travis.yml b/.travis.yml
index ccf8592..af6a8d9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,7 @@
 language: c
 sudo: required
 before_install:
+- sudo apt update
 - sudo apt install -y gcc git wget make libncurses-dev flex bison python python-serial ninja-build
 - wget https://dl.espressif.com/dl/xtensa-lx106-elf-linux64-1.22.0-100-ge567ec7-5.2.0.tar.gz