diff --git a/.travis.yml b/.travis.yml
index 06fa124..12fa02e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,3 +7,6 @@ rvm:
 before_script:
   - export QINIU_ACCESS_KEY=QWYn5TFQsLLU1pL5MFEmX3s5DmHdUThav9WyOWOm
   - export QINIU_SECRET_KEY=Bxckh6FA-Fbs9Yt3i3cbKVK22UPBmAOHJcL95pGz
+gemfile:
+  - Gemfile
+  - Gemfile_for_rails3
diff --git a/Gemfile b/Gemfile
index ec8c558..801040b 100755
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,7 @@
 source 'https://rubygems.org'
 
-# Specify your gem's dependencies in qiniu-s3.gemspec
-gemspec
+# Specify your gem's dependencies in qiniu.gemspec
+gemspec :name => 'qiniu'
 
 # platforms :jruby do
 #   gem "jruby-openssl"
diff --git a/Gemfile.lock b/Gemfile.lock
index b40bc46..57a60bf 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -3,28 +3,35 @@ PATH
   specs:
     qiniu (6.4.1)
       json (~> 1.7)
-      mime-types (~> 2.4.3)
+      mime-types (~> 1.19)
       rest-client (~> 1.6)
       ruby-hmac (~> 0.4)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    diff-lcs (1.1.3)
+    diff-lcs (1.2.5)
     fakeweb (1.3.0)
-    json (1.8.1)
-    mime-types (1.23)
-    rake (10.0.3)
-    rest-client (1.6.7)
-      mime-types (>= 1.16)
-    rspec (2.12.0)
-      rspec-core (~> 2.12.0)
-      rspec-expectations (~> 2.12.0)
-      rspec-mocks (~> 2.12.0)
-    rspec-core (2.12.2)
-    rspec-expectations (2.12.1)
-      diff-lcs (~> 1.1.3)
-    rspec-mocks (2.12.2)
+    json (1.8.2)
+    mime-types (1.25.1)
+    netrc (0.10.3)
+    rake (10.4.2)
+    rest-client (1.7.3)
+      mime-types (>= 1.16, < 3.0)
+      netrc (~> 0.7)
+    rspec (3.2.0)
+      rspec-core (~> 3.2.0)
+      rspec-expectations (~> 3.2.0)
+      rspec-mocks (~> 3.2.0)
+    rspec-core (3.2.2)
+      rspec-support (~> 3.2.0)
+    rspec-expectations (3.2.0)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.2.0)
+    rspec-mocks (3.2.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.2.0)
+    rspec-support (3.2.2)
     ruby-hmac (0.4.0)
 
 PLATFORMS
diff --git a/Gemfile_for_rails3 b/Gemfile_for_rails3
new file mode 100755
index 0000000..5f3c753
--- /dev/null
+++ b/Gemfile_for_rails3
@@ -0,0 +1,4 @@
+source 'https://rubygems.org'
+
+# Specify your gem's dependencies in qiniu_for_rails3.gemspec
+gemspec :name => 'qiniu_for_rails3'
diff --git a/qiniu_for_rails3.gemspec b/qiniu_for_rails3.gemspec
new file mode 100755
index 0000000..2c1db4e
--- /dev/null
+++ b/qiniu_for_rails3.gemspec
@@ -0,0 +1,29 @@
+# -*- encoding: utf-8 -*-
+
+require File.expand_path('../lib/qiniu/version', __FILE__)
+
+Gem::Specification.new do |gem|
+  gem.authors       = ["why404","BluntBlade"]
+  gem.email         = ["sdk@qiniu.com"]
+  gem.description   = %q{Qiniu Resource (Cloud) Storage SDK for Ruby. See: http://developer.qiniu.com/docs/v6/sdk/ruby-sdk.html}
+  gem.summary       = %q{Qiniu Resource (Cloud) Storage SDK for Ruby}
+  gem.homepage      = "https://github.com/qiniu/ruby-sdk"
+
+  gem.files         = `git ls-files`.split($\)
+  gem.executables   = gem.files.grep(%r{^bin/}).map{ |f| File.basename(f) }
+  gem.test_files    = gem.files.grep(%r{^(test|spec|features)/})
+  gem.name          = "qiniu"
+  gem.require_paths = ["lib"]
+  gem.version       = Qiniu::Version.to_s
+  gem.license       = "MIT"
+
+  # specify any dependencies here; for example:
+  gem.add_development_dependency "rake", ">= 0.9"
+  gem.add_development_dependency "rspec", ">= 2.11"
+  gem.add_development_dependency "fakeweb", "~> 1.3"
+  gem.add_runtime_dependency "json", "~> 1.7"
+  gem.add_runtime_dependency "rest-client", "~> 1.6"
+  gem.add_runtime_dependency "mime-types", "~> 1.19"
+  gem.add_runtime_dependency "ruby-hmac", "~> 0.4"
+  gem.add_runtime_dependency "jruby-openssl", "~> 0.7" if RUBY_PLATFORM == "java"
+end