Update development dependencies

Gemfile.lock

@@ -6,26 +6,26 @@ PATH
 GEM
   remote: http://rubygems.org/
   specs:
-    diff-lcs (1.1.2)
-    rake (0.8.7)
-    rake-compiler (0.7.5)
+    diff-lcs (1.1.3)
+    rake (0.9.2.2)
+    rake-compiler (0.7.9)
       rake
-    rcov (0.9.9)
-    rspec (2.3.0)
-      rspec-core (~> 2.3.0)
-      rspec-expectations (~> 2.3.0)
-      rspec-mocks (~> 2.3.0)
-    rspec-core (2.3.1)
-    rspec-expectations (2.3.0)
+    rcov (0.9.11)
+    rspec (2.7.0)
+      rspec-core (~> 2.7.0)
+      rspec-expectations (~> 2.7.0)
+      rspec-mocks (~> 2.7.0)
+    rspec-core (2.7.1)
+    rspec-expectations (2.7.0)
       diff-lcs (~> 1.1.2)
-    rspec-mocks (2.3.0)
+    rspec-mocks (2.7.0)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
   bundler (>= 1.0.0)
   patron!
-  rake-compiler (~> 0.7.5)
-  rcov (~> 0.9.9)
-  rspec (~> 2.3.0)
+  rake-compiler (>= 0.7.5)
+  rcov (>= 0.9.9)
+  rspec (>= 2.3.0)

patron.gemspec

@@ -15,9 +15,9 @@ Gem::Specification.new do |s|
   s.rubyforge_project = "patron"
 
   s.add_development_dependency "bundler", ">= 1.0.0"
-  s.add_development_dependency "rake-compiler", "~> 0.7.5"
-  s.add_development_dependency "rspec", "~> 2.3.0"
-  s.add_development_dependency "rcov", "~> 0.9.9"
+  s.add_development_dependency "rake-compiler", ">= 0.7.5"
+  s.add_development_dependency "rspec", ">= 2.3.0"
+  s.add_development_dependency "rcov", ">= 0.9.9"
 
   s.files        = `git ls-files`.split("\n")
   s.executables  = `git ls-files`.split("\n").map{|f| f =~ /^bin\/(.*)/ ? $1 : nil}.compact