Gemfile in timespan-0.5.4 vs Gemfile in timespan-0.5.5

@@ -2,26 +2,25 @@
 
 gem 'chronic'
 gem 'chronic_duration'
 gem 'activesupport', '>= 3.0.0'
 gem 'spanner'
-gem 'sugar-high', '~> 0.7.3' # for range intersect
-gem 'xduration',  '~> 2.2'
+gem 'sugar-high', '>= 0.7.3' # for range intersect
+gem 'xduration',  '>= 2.2'
 
 group :test, :development do
   gem "rspec", 		">= 2.8.0"
-  gem 'rails', 		'>= 3.2'
+  gem 'rails', 		'>= 3.1'
   # gem 'mongoid',  '>= 2.4'
   # gem 'bson',     '>= 1.6'
 
-  gem 'mongoid',  '~> 3.0'
+  gem 'mongoid',               '>= 3.0'
   gem 'origin-selectable_ext', '~> 0.1.1'
   # gem 'i18n'
 end
 
-
 group :development do
-  gem "rdoc", 		">= 3.12"
-  gem "bundler", 	">= 1.0.0"
-  gem "jeweler", 	">= 1.8.3"
-  gem "simplecov",">= 0.5"
+  # gem "rdoc", 		">= 3.12"
+  gem "bundler", 	">= 1.2.0"
+  gem "jeweler", 	">= 1.8.4", github: 'technicalpickles/jeweler'
+  gem "simplecov",">= 0.7"
 end