diff --git a/.travis.yml b/.travis.yml
index 278adaf29..1f97f940c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,6 +10,7 @@ rvm:
   - 2.2
   - 2.3
   - 2.4
+  - 2.5
   - jruby-head
 
 gemfile: