diff --git a/.travis.yml b/.travis.yml
index 745d76cf..1db6570b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,8 @@
 rvm:
   - 2.0.0
-  - 2.1.5
-  - 2.2.2
-  - 2.3.1
+  - 2.1.9
+  - 2.2.7
+  - 2.3.4
   - jruby-head
 branches:
   only: [master]