diff --git a/.travis.yml b/.travis.yml
index f72ce98..541a2bd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,7 @@ cache: bundler
 
 rvm:
   - 1.9.3
-  - 2.2
+  - 2.2.5
   - 2.3
   - jruby-1.7 # JRuby in 1.9 mode
   - jruby-9.0.4.0
@@ -41,7 +41,7 @@ matrix:
       gemfile: gemfiles/rails_4.1.gemfile
     - rvm: 1.9.3
       gemfile: gemfiles/rails_5.0.gemfile
-    - rvm: 2.2
+    - rvm: 2.2.5
       gemfile: gemfiles/rails_3.2_stable.gemfile
     - rvm: 2.3
       gemfile: gemfiles/rails_3.2_stable.gemfile
diff --git a/gemfiles/rails_5.0.gemfile b/gemfiles/rails_5.0.gemfile
index 15ffe2f..af273a6 100644
--- a/gemfiles/rails_5.0.gemfile
+++ b/gemfiles/rails_5.0.gemfile
@@ -6,9 +6,6 @@ gem 'rubinius-developer_tools',         :platforms => :rbx
 gem "jruby-openssl",                    :platforms => :jruby
 gem "activerecord-jdbcsqlite3-adapter", :platforms => :jruby
 
-gem "rack", "~> 1" if Gem::Version.create(RUBY_VERSION.dup) <= Gem::Version.create('2.2.2')
-gem "mime-types", "~> 2" if Gem::Version.create(RUBY_VERSION.dup) <= Gem::Version.create('1.9.3')
-
 gem "rails", "5.0.0.beta4"
 
 # mongoid is not yet Rails 5 compatible