diff --git a/.travis.yml b/.travis.yml
index 54051f5bb..5c51e7037 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,9 +3,10 @@ sudo: false
 rvm:
   - 2.0.0
   - 2.1.10
-  - 2.2.8
-  - 2.3.5
-  - 2.4.2
+  - 2.2.9
+  - 2.3.6
+  - 2.4.3
+  - 2.5.0
   - ruby-head
   - jruby-9.1.15.0
   - jruby-head