diff --git a/Gemfile b/Gemfile
index 3ff8cda..3fa1497 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,9 +10,9 @@ gem "thor"
 # Add dependencies to develop your gem here.
 # Include everything needed to run rake, tests, features, etc.
 group :development do
-  gem "shoulda", ">= 0"
+  gem "shoulda", ">= 3.5.0"
   gem "rdoc", "~> 3.12"
   gem "bundler", "~> 1.0"
-  gem "jeweler", "~> 2.0.1"
+  gem "jeweler", "~> 2.1.1"
   gem "simplecov", ">= 0"
 end