Gemfile in gb_dispatch-0.0.1 vs Gemfile in gb_dispatch-0.0.2

@@ -1,10 +1,10 @@
 source 'https://rubygems.org'
 
 # Specify your gem's dependencies in gb_dispatch.gemspec
 gemspec
 
-gem 'celluloid', '~>0.15.2'
+gem 'celluloid', '<=0.15.2'
 group :test do
   gem 'rspec'
   gem 'simplecov', :require => false
 end