diff --git a/.travis.yml b/.travis.yml
index e9309cd..5f8bbb2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,6 +5,7 @@ rvm:
   - 2.2
   - 2.3
   - 2.4
+  - 2.5
   # - "jruby"
   #  - rbx
   #  - "1.8.7"