celluloid-zmq.gemspec in celluloid-zmq-0.12.0 vs celluloid-zmq.gemspec in celluloid-zmq-0.13.0.pre

@@ -9,11 +9,11 @@
   gem.homepage      = "http://github.com/celluloid/celluloid-zmq"
 
   gem.name          = "celluloid-zmq"
   gem.version       = Celluloid::ZMQ::VERSION
 
-  gem.add_dependency "celluloid",    "~> 0.12.0"
-  gem.add_dependency "celluloid-io", "~> 0.12.0"
+  gem.add_dependency "celluloid",    ">= 0.13.0.pre"
+  gem.add_dependency "celluloid-io", ">= 0.13.0.pre"
   gem.add_dependency "ffi"
   gem.add_dependency "ffi-rzmq"
 
   gem.add_development_dependency "rake"
   gem.add_development_dependency "rspec"