diff --git a/.travis.yml b/.travis.yml
index f5bbe8f..f24370d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,10 +3,10 @@ sudo: false
 
 rvm:
   - 1.9.3
-  - 2.1.7
-  - 2.2.3
-  - 2.3.0
-  - 2.3.1
+  - 2.1.10
+  - 2.2.6
+  - 2.3.3
+  - 2.4.0
   - jruby-19mode
   # - rbx
   - ruby-head