From bcc1ec65f9a2d07909a0cdb74f4e3bf32517794e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E1=B4=9C=C9=B4=E1=B4=8B=C9=B4=E1=B4=A1=E1=B4=8F=C9=B4?=
 <u@gogs.io>
Date: Wed, 19 Feb 2020 17:37:52 +0800
Subject: [PATCH] .travis: fix config warning

[CI SKIP]
---
 .travis.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.travis.yml b/.travis.yml
index 3d2638d96..f77fc76b6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,3 +1,4 @@
+os: linux
 language: go
 go:
   - 1.11.x