1 files changed, 1 insertions, 0 deletions

diff --git a/.travis.yml b/.travis.yml
index cc77ff9..b7185f7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,5 @@
 ---
+os: linux
 dist: bionic
 language: ruby
 cache: bundler