diff --git a/.travis.yml b/.travis.yml
index 87b773359..b2a21e056 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,11 @@ rvm:
   - 1.9.2
   - 1.9.3
   - 2.0.0
-  - jruby
+  - rbx-18mode
+  - rbx-19mode
+  - jruby-18mode
+  - jruby-19mode
+  - jruby-20mode
   - ree
 script: "bundle exec rake spec:all"
 before_install:
@@ -16,6 +20,3 @@ notifications:
       - sbazyl@google.com
     on_success: change
     on_failure: change
-matrix:
-  allow_failures:
-    - rvm: 2.0.0
diff --git a/Gemfile b/Gemfile
index 17a5b0eae..fe9680f27 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,4 @@
-source :rubygems
+source 'https://rubygems.org'
 
 gemspec