diff --git a/hutch.gemspec b/hutch.gemspec
index 4ff9de3..b1b3cd4 100644
--- a/hutch.gemspec
+++ b/hutch.gemspec
@@ -11,6 +11,7 @@ Gem::Specification.new do |gem|
   gem.add_runtime_dependency 'carrot-top', '~> 0.0.7'
   gem.add_runtime_dependency 'multi_json', '~> 1.15'
   gem.add_runtime_dependency 'activesupport', '>= 4.2'
+  gem.add_runtime_dependency 'ostruct', '~> 0.6'
 
   gem.name = 'hutch'
   gem.summary = 'Opinionated asynchronous inter-service communication using RabbitMQ'
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 9793a19..5aa602f 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -12,6 +12,7 @@
 require 'raven'
 require 'hutch'
 require 'logger'
+require 'ostruct'
 
 # set logger to be a null logger
 Hutch::Logging.logger = Logger.new(File::NULL)