# Sources<no value>
##### 1. 编辑配置文件,编辑完成后请记得保存.
路径: `/etc/apt/sources.list`
```text
# Debian Testing main repo
deb http://deb.debian.org/debian testing main contrib non-free non-free-firmware

# Debian Testing updates
deb http://deb.debian.org/debian testing-updates main contrib non-free non-free-firmware

# Debian Testing security
deb http://security.debian.org/debian-security testing-security main contrib non-free non-free-firmware

```

##### 2. 更新索引 & 升级系统
```bash
apt update && apt full-upgrade
```