diff --git a/.travis.yml b/.travis.yml
index 35adc057..d468b9b4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,4 +6,8 @@ rvm:
   - 2.3.3
   - 2.4.0
   - jruby
-  - rbx-2.4.1
+  - rbx-3
+
+matrix:
+  allow_failures:
+    - rvm: rbx-3
diff --git a/README.md b/README.md
index 61d50a08..04a38efb 100644
--- a/README.md
+++ b/README.md
@@ -156,9 +156,9 @@ Ryan Bates has put together an excellent RailsCast on OmniAuth:
 
 ## Supported Rubies
 
-OmniAuth Twitter is tested under 2.1.x, 2.2.x, JRuby, and Rubinius.
+OmniAuth Twitter is tested under 2.1.x, 2.2.x and JRuby.
 
-If you use its gem on ruby 1.9.x or 2.0.x, use version v1.2.1 .
+If you use its gem on ruby 1.9.x, 2.0.x, or Rubinius use version v1.2.1 .
 
 ## Contributing