diff --git a/.travis.yml b/.travis.yml
index b587a22..9b143b8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,14 +1,15 @@
 language: ruby
 
 os:
-  - osx
   - linux
 
 rvm:
+  - "2.3"
   - "2.4"
+  - "2.6"
 
 before_install:
-  - if [ "$TRAVIS_OS_NAME" == "linux" ]; then sudo apt-get install --assume-yes --quiet gcc-multilib; fi
+  - sudo apt-get install --assume-yes --quiet gcc-multilib
 
 install:
   - bundle install