diff --git a/.travis.yml b/.travis.yml
index 5c4c831..64cd863 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -17,9 +17,9 @@ matrix:
       gemfile: gemfiles/Gemfile.2_1
     - rvm: 2.3.1
       gemfile: gemfiles/Gemfile.2_3_1
-    - rvm: 2.4.0-preview2
+    - rvm: 2.4.0-preview3
       gemfile: gemfiles/Gemfile.2_4_0
-    - rvm: jruby-9.1.5.0
+    - rvm: jruby-9.1.6.0
       jdk: oraclejdk8
       gemfile: gemfiles/Gemfile.jruby-9.1.5.0
       env:
diff --git a/gemfiles/Gemfile.jruby-9.1.5.0 b/gemfiles/Gemfile.jruby-9.1.6.0
similarity index 100%
rename from gemfiles/Gemfile.jruby-9.1.5.0
rename to gemfiles/Gemfile.jruby-9.1.6.0