diff --git a/.travis.yml b/.travis.yml
index d7f431d..ebfa48e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,9 +2,10 @@
 
 rvm:
   - 2.1.10
-  - 2.2.6
-  - 2.3.3
-  - 2.4.0
+  - 2.2.9
+  - 2.3.6
+  - 2.4.3
+  - 2.5.0
   - jruby-1.7.26
   - rbx-3