diff --git a/goliath.gemspec b/goliath.gemspec
index 69ece725..5b250ea5 100644
--- a/goliath.gemspec
+++ b/goliath.gemspec
@@ -13,7 +13,7 @@ Gem::Specification.new do |s|
   s.description = s.summary
 
   s.add_dependency 'eventmachine', '>= 1.0.0.beta.3'
-  s.add_dependency 'em-synchrony', '>= 0.3.0.beta.1'
+  s.add_dependency 'em-synchrony', '>= 1.0.0'
   s.add_dependency 'http_parser.rb'
   s.add_dependency 'log4r'
 
@@ -28,7 +28,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'rspec', '>2.0'
   s.add_development_dependency 'nokogiri'
   s.add_development_dependency 'em-http-request', '>= 1.0.0.beta.1'
-  s.add_development_dependency 'em-mongo', '~> 0.3.6'
+  s.add_development_dependency 'em-mongo', '~> 0.4.0'
   s.add_development_dependency 'yajl-ruby'
   s.add_development_dependency 'rack-rewrite'
   s.add_development_dependency 'multipart_body'