diff --git a/.travis.yml b/.travis.yml
index 6ca7019..55a8e73 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -18,10 +18,11 @@ install:
   - bundle install --retry=3
 
 rvm:
-  - 1.9
-  - 2.0
+  - 1.9.3
+  - 2.0.0
   - 2.1
   - 2.2
+  - 2.3.1
   - rbx
   - jruby
 
@@ -33,6 +34,8 @@ matrix:
     # Binaries for these rubies aren't available on OS X :<
     - rvm: 2.2
       os: osx
+    - rvm: 2.3.1
+      os: osx
     - rvm: jruby
       os: osx
   fast_finish: true