amq-client 0.8.4 is released to rubygems.org [1]. This is a bug fix release: * basic.cancel-ok callback is now invoked correctly. 1. https://rubygems.org/gems/amq-client/versions/0.8.4 All amqp gem users are recommended to upgrade. MK http://github.com/michaelklishin http://twitter.com/michaelklishin