diff --git a/.travis.yml b/.travis.yml
index d744b7c..7caec7c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,8 +3,8 @@ language: ruby
 rvm:
   - 2.0.0
   - 2.1.10
-  - 2.2.5
-  - 2.3.1
+  - 2.2.6
+  - 2.3.3
   - ruby-head
   - jruby-9.1.5.0
   - rbx