diff --git a/.travis.yml b/.travis.yml
index d5af272..273b159 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,12 +9,13 @@ os:
 rvm:
   - "2.0.0"
   - "2.1" # latest 2.1.x
-  - "2.2.5"
+  - "2.2.7"
   - "2.3.3"
-  - "2.4.0"
+  - "2.4.1"
   - "ruby-head"
   - "jruby-9.0.5.0"
   - "jruby-9.1.5.0"
+  - "jruby-9.1.9.0"
   - "jruby-head"
 
 cache: bundler