diff --git a/.travis.yml b/.travis.yml
index def3322a..fd44cf51 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,6 +5,7 @@ rvm:
   - 2.0.0
   - ruby-head
   - ree
+  - rbx-2.1.0
   - rbx-18mode
   - rbx-19mode
   - jruby-18mode
diff --git a/Gemfile b/Gemfile
index c1a08177..7a34045e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,3 +7,8 @@ group :development do
   gem 'rb-inotify', :require => 'false'
   gem 'rb-fsevent', :require => 'false'
 end
+
+if RbConfig::CONFIG['ruby_install_name'] == 'rbx'
+  gem 'rubysl-singleton'
+  gem 'rb-readline'
+end
diff --git a/spec/pry_repl_spec.rb b/spec/pry_repl_spec.rb
index 8a0d8dc5..a6611310 100644
--- a/spec/pry_repl_spec.rb
+++ b/spec/pry_repl_spec.rb
@@ -17,13 +17,13 @@ describe "The whole thing" do
       input  'raise "lorum"'
       output /^RuntimeError: lorum/
 
-      input  'raise java.lang.Exception.new("foo")'
-      expected = defined?(java.lang.Exception) ? /Exception: foo/ : /^NameError: /
-      output expected
+      if defined?(java)
+        input  'raise java.lang.Exception.new("foo")'
+        output /Exception: foo/
 
-      input  'raise java.io.IOException.new("bar")'
-      expected = defined?(java.io.IOException) ? /IOException: bar/ : /^NameError: /
-      output expected
+        input  'raise java.io.IOException.new("bar")'
+        output /IOException: bar/
+      end
     end
   end