Specify 1.0.0.beta1 exactly

omniauth-ldap.gemspec

@@ -8,7 +8,7 @@ Gem::Specification.new do |gem|
   gem.summary       = %q{A LDAP strategy for OmniAuth.}
   gem.homepage      = "https://github.com/intridea/omniauth-ldap"
-  gem.add_runtime_dependency     'omniauth', '~> 1.0.0.beta1'
+  gem.add_runtime_dependency     'omniauth', '1.0.0.beta1'
   gem.add_runtime_dependency     'net-ldap', '~>0.2.2'
   gem.add_runtime_dependency     'pyu-ruby-sasl', '~> 0.0.3.1'
   gem.add_runtime_dependency     'rubyntlm', '~> 0.1.1'