travis: fix build config validation problems

- https://docs.travis-ci.com/user/reference/overview/#deprecated-virtualization-environments
2020-02-28 13:25:02 +01:00 · 2020-02-28 13:25:02 +01:00 · 17054794da
parent ab81c8975e
commit 17054794da
1 changed files with 5 additions and 5 deletions
--- a/.travis.yml
+++ b/.travis.yml
@ -1,8 +1,8 @@
 ---
-sudo: false
+os: linux
 language: ruby
 rvm:
-  - 2.6
-  - 2.5
-  - 2.4
-  - 2.3
+- 2.6
+- 2.5
+- 2.4
+- 2.3