diff --git a/.travis.yml b/.travis.yml
index 6480ac2..f10419d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,7 @@ bundler_args: "--without exclude_in_travis"
 rvm:
 - 2.2.9
 - 2.3.6
+- 2.4.3
 os:
 - linux
 - osx