diff --git a/.travis.yml b/.travis.yml
index fea9733..24906ae 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,8 +4,9 @@ language: ruby
 
 rvm:
   - 2.0.0
-  - 2.1.8
-  - 2.2.4
+  - 2.1.9
+  - 2.2.5
+  - 2.3.1
 
 before_install:
   - "export DISPLAY=:99.0"