diff --git a/.travis.yml b/.travis.yml
index 93f8f056..0abfc9c4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,6 +9,7 @@ rvm:
   - "2.2"
   - "2.3"
   - "2.4"
+  - "2.5"
   - ruby-head
   - jruby
   - jruby-head