diff --git a/lib/mangopay/version.rb b/lib/mangopay/version.rb
index 97eabc3..410a597 100644
--- a/lib/mangopay/version.rb
+++ b/lib/mangopay/version.rb
@@ -1,3 +1,3 @@
 module MangoPay
-  VERSION = '3.0.5'
+  VERSION = '3.0.6'
 end
diff --git a/mangopay.gemspec b/mangopay.gemspec
index 161ea51..ec7107c 100644
--- a/mangopay.gemspec
+++ b/mangopay.gemspec
@@ -18,7 +18,7 @@ Gem::Specification.new do |s|
 
   s.required_ruby_version = '>= 1.9.2'
 
-  s.add_dependency('multi_json', '~> 1.7.7')
+  s.add_dependency('multi_json', '>= 1.7.7')
 
   s.add_development_dependency('rake', '~> 10.1.0')
   s.add_development_dependency('rspec', '~> 2.14.1')