diff --git a/omniauth-ldap.gemspec b/omniauth-ldap.gemspec
index 71e44d5..55d7bac 100644
--- a/omniauth-ldap.gemspec
+++ b/omniauth-ldap.gemspec
@@ -9,15 +9,15 @@ Gem::Specification.new do |gem|
   gem.homepage      = "https://github.com/intridea/omniauth-ldap"
 
   gem.add_runtime_dependency     'omniauth', '~> 1.0'
-  gem.add_runtime_dependency     'net-ldap', '~> 0.2.2'
+  gem.add_runtime_dependency     'net-ldap', '~> 0.3.1'
   gem.add_runtime_dependency     'pyu-ruby-sasl', '~> 0.0.3.1'
-  gem.add_runtime_dependency     'rubyntlm', '~> 0.1.1'  
+  gem.add_runtime_dependency     'rubyntlm', '~> 0.1.1'
   gem.add_development_dependency 'rspec', '~> 2.7'
   gem.add_development_dependency 'simplecov'
   gem.add_development_dependency 'rack-test'
   gem.add_development_dependency 'libnotify'
   gem.add_development_dependency 'ruby-debug19'
-  
+
   gem.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
   gem.files         = `git ls-files`.split("\n")
   gem.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")