diff --git a/.gitignore b/.gitignore
index 73819c4..d7b8bd7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,7 +5,6 @@
 .bundle
 .config
 .yardoc
-Gemfile.lock
 InstalledFiles
 _yardoc
 coverage
@@ -22,3 +21,4 @@ tmp
 *.o
 *.a
 mkmf.log
+.idea
diff --git a/Gemfile b/Gemfile
index 79425c4..765ace7 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,3 +2,8 @@ source 'https://rubygems.org'
 
 # Specify your gem's dependencies in acts_as_enum.gemspec
 gemspec
+
+group :development, :test do
+  gem 'byebug'
+  gem 'sqlite3'
+end
\ No newline at end of file
diff --git a/Gemfile.lock b/Gemfile.lock
new file mode 100644
index 0000000..44c4d44
--- /dev/null
+++ b/Gemfile.lock
@@ -0,0 +1,47 @@
+PATH
+  remote: .
+  specs:
+    persistent_enum (1.0.9)
+      activerecord (~> 4.0)
+      activesupport (~> 4.0)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    activemodel (4.2.4)
+      activesupport (= 4.2.4)
+      builder (~> 3.1)
+    activerecord (4.2.4)
+      activemodel (= 4.2.4)
+      activesupport (= 4.2.4)
+      arel (~> 6.0)
+    activesupport (4.2.4)
+      i18n (~> 0.7)
+      json (~> 1.7, >= 1.7.7)
+      minitest (~> 5.1)
+      thread_safe (~> 0.3, >= 0.3.4)
+      tzinfo (~> 1.1)
+    arel (6.0.3)
+    builder (3.2.2)
+    byebug (6.0.2)
+    i18n (0.7.0)
+    json (1.8.3)
+    minitest (5.8.2)
+    rake (10.4.2)
+    sqlite3 (1.3.11)
+    thread_safe (0.3.5)
+    tzinfo (1.2.2)
+      thread_safe (~> 0.1)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  bundler (~> 1.0)
+  byebug
+  persistent_enum!
+  rake (~> 10.0)
+  sqlite3
+
+BUNDLED WITH
+   1.10.6
diff --git a/lib/persistent_enum/version.rb b/lib/persistent_enum/version.rb
index 8f44cf0..4af466f 100644
--- a/lib/persistent_enum/version.rb
+++ b/lib/persistent_enum/version.rb
@@ -1,3 +1,3 @@
 module PersistentEnum
-  VERSION = "1.0.8"
+  VERSION = "1.0.9"
 end
diff --git a/persistent_enum.gemspec b/persistent_enum.gemspec
index 89ae7b5..fabdf63 100644
--- a/persistent_enum.gemspec
+++ b/persistent_enum.gemspec
@@ -7,10 +7,10 @@ Gem::Specification.new do |spec|
   spec.name          = "persistent_enum"
   spec.version       = PersistentEnum::VERSION
   spec.authors       = ["Cerego"]
-  spec.email         = ["edge@cerego.com"]
-  spec.summary       = %q{Database-backed enums for Rails}
-  spec.description   = %q{Provide a database-backed enumeration between indices and symbolic values. This allows us to have a valid foreign key which behaves like a enumeration. Values are cached at startup, and cannot be changed.}
-  spec.homepage      = "http://www.cerego.co.jp"
+  spec.email         = ["edge-usa@cerego.com"]
+  spec.summary       = "Database-backed enums for Rails"
+  spec.description   = "Provide a database-backed enumeration between indices and symbolic values. This allows us to have a valid foreign key which behaves like a enumeration. Values are cached at startup, and cannot be changed."
+  spec.homepage      = "http://www.cerego.com"
   spec.license       = "BSD-2-Clause"
 
   spec.files         = `git ls-files -z`.split("\x0")
@@ -18,13 +18,9 @@ Gem::Specification.new do |spec|
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ["lib"]
 
-  spec.add_dependency "activerecord"
-  spec.add_dependency "activesupport"
+  spec.add_development_dependency "bundler", "~> 1.0"
+  spec.add_development_dependency "rake", "~> 10.0"
 
-  spec.add_development_dependency "bundler", "~> 1.6"
-  spec.add_development_dependency "rake"
-
-  spec.add_development_dependency "sqlite3"
-
-  spec.add_development_dependency "byebug"
+  spec.add_dependency "activerecord", "~> 4.0"
+  spec.add_dependency "activesupport", "~> 4.0"
 end
diff --git a/test/unit/persistent_enum_test.rb b/test/unit/persistent_enum_test.rb
index fe64baa..e6b6e78 100644
--- a/test/unit/persistent_enum_test.rb
+++ b/test/unit/persistent_enum_test.rb
@@ -101,10 +101,10 @@ def test_requires_constants
 
     CONSTANTS.each do |c|
       cached = TestRequiresConstant.const_get(c.upcase)
-      assert_present(cached)
+      assert(cached.present?)
       assert_equal(c.to_s, cached.name)
       stored = TestRequiresConstant.where(name: c.to_s).first
-      assert_present(stored)
+      assert(stored.present?)
       assert_equal(cached, stored)
     end
 
@@ -124,7 +124,7 @@ def test_constant_naming
     end
 
     test_constants.each do |k, v|
-      assert_present(TestConstantName.const_get(v))
+      assert(TestConstantName.const_get(v).present?)
     end
 
     destroy_test_model(:test_constant_name)