diff --git a/app.rb b/app.rb
index d158c53..06c29a8 100644
--- a/app.rb
+++ b/app.rb
@@ -9,6 +9,7 @@
 require_relative 'lib/tumblr-recommender'
 
 class App < Sinatra::Base
+  VERSION = '0.1.1'
   @@worker_lock = Mutex.new
   @@working_queries = {}
   @@restarting_lock = Mutex.new