diff --git a/.gitignore b/.gitignore
index 2b276861..366534de 100644
--- a/.gitignore
+++ b/.gitignore
@@ -31,3 +31,4 @@ doc/app
 /.rvmrc*
 /*.iml
 /.idea
+.rbx
diff --git a/.travis.yml b/.travis.yml
index 87359bb3..cd39a758 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,7 @@ rvm:
   - 1.8.7
   - 1.9.2
   - 1.9.3
+  - rbx-18mode
 env:
   - "RAILS_ENV=test DB=mysql BUNDLE_WITHOUT=rmagick:mysql2:postgres:sqlite"
   - "RAILS_ENV=test DB=mysql2 BUNDLE_WITHOUT=rmagick:mysql:postgres:sqlite"
@@ -14,6 +15,10 @@ matrix:
       env: "RAILS_ENV=test DB=mysql BUNDLE_WITHOUT=rmagick:mysql2:postgres:sqlite"
     - rvm: 1.9.3
       env: "RAILS_ENV=test DB=mysql BUNDLE_WITHOUT=rmagick:mysql2:postgres:sqlite"
+    - rvm: rbx-18mode
+      env: "RAILS_ENV=test DB=mysql BUNDLE_WITHOUT=rmagick:mysql2:postgres:sqlite"
+  allow_failures:
+    - rvm: rbx-18mode
 before_script:
   - "sudo apt-get --no-install-recommends install bzr cvs darcs git mercurial subversion"
   - "rake ci:travis:prepare"
diff --git a/Gemfile b/Gemfile
index f6c804d1..9b93963b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -54,7 +54,7 @@ end
 # orders of magnitude compared to their native counterparts. You have been
 # warned.
 
-platforms :mri, :mingw do
+platforms :mri, :mingw, :rbx do
   group :mysql2 do
     gem "mysql2", "~> 0.2.7"
   end
@@ -76,7 +76,7 @@ platforms :mri_18, :mingw_18 do
   end
 end
 
-platforms :mri_19, :mingw_19 do
+platforms :mri_19, :mingw_19, :rbx do
   group :sqlite do
     gem "sqlite3"
   end