diff --git a/Gemfile b/Gemfile
index 5fafe05..8276abf 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,12 +1,14 @@
 source 'http://rubygems.org/'
 
 gem 'activesupport', '>= 2.3.0'
-gem 'json', '>= 1.0.0'
-gem 'redis', '>= 2.0.0'
+gem 'json', '>= 1.4.6'
+gem 'redis', '>= 2.1.1'
+gem 'system_timer', '>= 1.0.0'
 gem 'time_ext', '>= 0.2.6'
 
 group :development do
-  gem 'rspec', '>= 2.0.1'
-  gem 'yard', '>= 0.6.1'
+  gem 'jeweler', '>= 1.5.1'
+  gem 'rspec', '>= 2.1.0'
+  gem 'yard', '>= 0.6.3'
   gem 'i18n'
 end
\ No newline at end of file
diff --git a/Gemfile.lock b/Gemfile.lock
index 0a8a4bc..e226764 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -3,8 +3,14 @@ GEM
   specs:
     activesupport (3.0.3)
     diff-lcs (1.1.2)
+    git (1.2.5)
     i18n (0.4.2)
+    jeweler (1.5.1)
+      bundler (~> 1.0.0)
+      git (>= 1.2.5)
+      rake
     json (1.4.6)
+    rake (0.8.7)
     redis (2.1.1)
     rspec (2.1.0)
       rspec-core (~> 2.1.0)
@@ -14,6 +20,7 @@ GEM
     rspec-expectations (2.1.0)
       diff-lcs (~> 1.1.2)
     rspec-mocks (2.1.0)
+    system_timer (1.0)
     time_ext (0.2.6)
       activesupport (>= 2.3.0)
     yard (0.6.3)
@@ -24,8 +31,10 @@ PLATFORMS
 DEPENDENCIES
   activesupport (>= 2.3.0)
   i18n
-  json (>= 1.0.0)
-  redis (>= 2.0.0)
-  rspec (>= 2.0.1)
+  jeweler (>= 1.5.1)
+  json (>= 1.4.6)
+  redis (>= 2.1.1)
+  rspec (>= 2.1.0)
+  system_timer (>= 1.0.0)
   time_ext (>= 0.2.6)
-  yard (>= 0.6.1)
+  yard (>= 0.6.3)
diff --git a/Rakefile b/Rakefile
index d2c9ea2..76bdbcf 100644
--- a/Rakefile
+++ b/Rakefile
@@ -11,10 +11,12 @@ begin
     gem.homepage = 'http://github.com/jimeh/redistat'
     gem.authors = ['Jim Myhrberg']
     gem.add_dependency 'activesupport', '>= 2.3.0'
-    gem.add_dependency 'json', '>= 1.0.0'
-    gem.add_dependency 'redis', '>= 2.0.0'
+    gem.add_dependency 'json', '>= 1.4.6'
+    gem.add_dependency 'redis', '>= 2.1.1'
+    gem.add_dependency 'system_timer', '>= 1.0.0'
     gem.add_dependency 'time_ext', '>= 0.2.6'
-    gem.add_development_dependency 'rspec', '>= 2.0.1'
+    gem.add_development_dependency 'jeweler', '>= 1.5.1'
+    gem.add_development_dependency 'rspec', '>= 2.1.0'
     gem.add_development_dependency 'yard', '>= 0.6.1'
   end
   Jeweler::GemcutterTasks.new