diff --git a/Gemfile b/Gemfile
index af62163f7..993057f80 100644
--- a/Gemfile
+++ b/Gemfile
@@ -68,7 +68,7 @@ gem "font-awesome-rails", '~> 3.2'
 gem 'turbolinks'
 gem 'jquery-turbolinks'
 gem 'nprogress-rails'
-gem 'slack-post'
+gem 'slack-post', '0.2.0'
 
 
 group :development do
diff --git a/Gemfile.lock b/Gemfile.lock
index 709afec4c..dc7a18e7a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -255,7 +255,7 @@ GEM
       rack (~> 1.4)
       rack-protection (~> 1.4)
       tilt (~> 1.3, >= 1.3.4)
-    slack-post (0.0.1)
+    slack-post (0.2.0)
       yajl-ruby
     slim (2.0.2)
       temple (~> 0.6.6)
@@ -359,7 +359,7 @@ DEPENDENCIES
   sidekiq
   simplecov
   sinatra
-  slack-post
+  slack-post (= 0.2.0)
   slim
   stamp
   state_machine
diff --git a/lib/slack_notifier.rb b/lib/slack_notifier.rb
index b0210082f..6d6ce8282 100644
--- a/lib/slack_notifier.rb
+++ b/lib/slack_notifier.rb
@@ -5,11 +5,11 @@ module Slack
   class Notifier
     class << self
       def build_fail_slack_post(build)
-        post("#{slack_text(build)} failed")
+        post(build, "#{slack_text(build)} failed")
       end
 
       def build_success_slack_post(build)
-        post("#{slack_text(build)} passed")
+        post(build, "#{slack_text(build)} passed")
       end
 
       def slack_text(build)
@@ -27,7 +27,7 @@ def post(build, slack_string)
           subdomain: project.slack_notification_subdomain,
           token:     project.slack_notification_token,
           username:  project.slack_notification_username)
-        Slack::Post.post str, slack_notification_channel
+        Slack::Post.post slack_string, project.slack_notification_channel
       end
     end
   end