diff --git a/Gemfile b/Gemfile
index a9c80b8..a19cb52 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,7 +2,7 @@ source 'http://rubygems.org'
 
 ruby '2.2.0'
 
-gem 'slack-ruby-bot'
+gem 'slack-ruby-bot', :path => "slack-ruby-bot-0.4.4/"
 gem 'puma'
 gem 'sinatra'
 gem 'dentaku'