diff --git a/Gemfile b/Gemfile
index cb62528..0c2e1bb 100644
--- a/Gemfile
+++ b/Gemfile
@@ -12,7 +12,7 @@ group :runtime do # Runtime dependencies (as in the gemspec)
   if ENV['EXTLIB']
     gem 'extlib',        '~> 0.9.15', SOURCE => "#{DATAMAPPER}/extlib#{REPO_POSTFIX}", :require => nil
   else
-    gem 'activesupport', '~> 3.0.3', :require => nil
+    gem 'activesupport', '~> 3.0.4', :require => nil
   end
 
   gem 'dm-core',         DM_VERSION, SOURCE => "#{DATAMAPPER}/dm-core#{REPO_POSTFIX}"
@@ -23,7 +23,7 @@ group(:development) do # Development dependencies (as in the gemspec)
 
   gem 'rake',           '~> 0.8.7'
   gem 'rspec',          '~> 1.3.1'
-  gem 'jeweler',        '~> 1.4.0'
+  gem 'jeweler',        '~> 1.5.2'
 
 end
 
diff --git a/Rakefile b/Rakefile
index c9e20e1..084aaf7 100644
--- a/Rakefile
+++ b/Rakefile
@@ -2,7 +2,7 @@ require 'rubygems'
 require 'rake'
 
 begin
-  gem 'jeweler', '~> 1.4'
+  gem 'jeweler', '~> 1.5.2'
   require 'jeweler'
 
   Jeweler::Tasks.new do |gem|
@@ -15,15 +15,11 @@ begin
     gem.has_rdoc    = 'yard'
 
     gem.rubyforge_project = 'datamapper'
-
-    gem.add_dependency 'dm-core', '~> 1.0.2'
-
-    gem.add_development_dependency 'rspec', '~> 1.3'
   end
 
   Jeweler::GemcutterTasks.new
 
   FileList['tasks/**/*.rake'].each { |task| import task }
 rescue LoadError
-  puts 'Jeweler (or a dependency) not available. Install it with: gem install jeweler'
+  puts 'Jeweler (or a dependency) not available. Install it with: gem install jeweler -v 1.5.2'
 end
diff --git a/dm-timestamps.gemspec b/dm-timestamps.gemspec
index 3548c8f..8c31b1a 100644
--- a/dm-timestamps.gemspec
+++ b/dm-timestamps.gemspec
@@ -1,6 +1,6 @@
 # Generated by jeweler
 # DO NOT EDIT THIS FILE DIRECTLY
-# Instead, edit Jeweler::Tasks in Rakefile, and run the gemspec command
+# Instead, edit Jeweler::Tasks in Rakefile, and run 'rake gemspec'
 # -*- encoding: utf-8 -*-
 
 Gem::Specification.new do |s|
@@ -9,56 +9,61 @@ Gem::Specification.new do |s|
 
   s.required_rubygems_version = Gem::Requirement.new(">= 0") if s.respond_to? :required_rubygems_version=
   s.authors = ["Foy Savas"]
-  s.date = %q{2010-11-26}
+  s.date = %q{2011-02-19}
   s.description = %q{DataMapper plugin for magical timestamps}
   s.email = %q{foysavas [a] gmail [d] com}
   s.extra_rdoc_files = [
     "LICENSE",
-     "README.rdoc"
+    "README.rdoc"
   ]
   s.files = [
-    ".gitignore",
-     "Gemfile",
-     "LICENSE",
-     "README.rdoc",
-     "Rakefile",
-     "VERSION",
-     "dm-timestamps.gemspec",
-     "lib/dm-timestamps.rb",
-     "spec/integration/timestamps_spec.rb",
-     "spec/rcov.opts",
-     "spec/spec.opts",
-     "spec/spec_helper.rb",
-     "tasks/spec.rake",
-     "tasks/yard.rake",
-     "tasks/yardstick.rake"
+    "Gemfile",
+    "LICENSE",
+    "README.rdoc",
+    "Rakefile",
+    "VERSION",
+    "dm-timestamps.gemspec",
+    "lib/dm-timestamps.rb",
+    "spec/integration/timestamps_spec.rb",
+    "spec/rcov.opts",
+    "spec/spec.opts",
+    "spec/spec_helper.rb",
+    "tasks/spec.rake",
+    "tasks/yard.rake",
+    "tasks/yardstick.rake"
   ]
-  s.has_rdoc = %q{yard}
   s.homepage = %q{http://github.com/datamapper/dm-timestamps}
-  s.rdoc_options = ["--charset=UTF-8"]
   s.require_paths = ["lib"]
   s.rubyforge_project = %q{datamapper}
-  s.rubygems_version = %q{1.3.7}
+  s.rubygems_version = %q{1.5.2}
   s.summary = %q{DataMapper plugin for magical timestamps}
   s.test_files = [
     "spec/integration/timestamps_spec.rb",
-     "spec/spec_helper.rb"
+    "spec/spec_helper.rb"
   ]
 
   if s.respond_to? :specification_version then
-    current_version = Gem::Specification::CURRENT_SPECIFICATION_VERSION
     s.specification_version = 3
 
     if Gem::Version.new(Gem::VERSION) >= Gem::Version.new('1.2.0') then
+      s.add_runtime_dependency(%q<activesupport>, ["~> 3.0.4"])
       s.add_runtime_dependency(%q<dm-core>, ["~> 1.0.2"])
-      s.add_development_dependency(%q<rspec>, ["~> 1.3"])
+      s.add_development_dependency(%q<rake>, ["~> 0.8.7"])
+      s.add_development_dependency(%q<rspec>, ["~> 1.3.1"])
+      s.add_development_dependency(%q<jeweler>, ["~> 1.5.2"])
     else
+      s.add_dependency(%q<activesupport>, ["~> 3.0.4"])
       s.add_dependency(%q<dm-core>, ["~> 1.0.2"])
-      s.add_dependency(%q<rspec>, ["~> 1.3"])
+      s.add_dependency(%q<rake>, ["~> 0.8.7"])
+      s.add_dependency(%q<rspec>, ["~> 1.3.1"])
+      s.add_dependency(%q<jeweler>, ["~> 1.5.2"])
     end
   else
+    s.add_dependency(%q<activesupport>, ["~> 3.0.4"])
     s.add_dependency(%q<dm-core>, ["~> 1.0.2"])
-    s.add_dependency(%q<rspec>, ["~> 1.3"])
+    s.add_dependency(%q<rake>, ["~> 0.8.7"])
+    s.add_dependency(%q<rspec>, ["~> 1.3.1"])
+    s.add_dependency(%q<jeweler>, ["~> 1.5.2"])
   end
 end
 
diff --git a/tasks/spec.rake b/tasks/spec.rake
index 0806eaf..652b946 100644
--- a/tasks/spec.rake
+++ b/tasks/spec.rake
@@ -35,7 +35,4 @@ rescue LoadError
   end
 end
 
-task :spec => :check_dependencies
-task :rcov => :check_dependencies
-
 task :default => :spec