diff --git a/.travis.yml b/.travis.yml
index eedfa632..6ebc2f0f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,8 @@
 language: ruby
 rvm:
-- "2.2.5"
-- "2.3.1"
+- "2.2.6"
+- "2.3.3"
+- "2.4.0"
 - ruby-head
 - jruby-head
 matrix: