diff --git a/Gemfile b/Gemfile
index 277b4e1..237bed3 100644
--- a/Gemfile
+++ b/Gemfile
@@ -12,4 +12,7 @@ group :test do
   gem 'rspec', '~> 3.0.0'
   gem 'rspec-its'
   gem 'system_timer', :platform => :mri_18
+  # Used for testing encoding protobufs in an out of Hermann in integration
+  # tests
+  gem 'protobuffy'
 end