diff --git a/lib/bummr/outdated.rb b/lib/bummr/outdated.rb
index <HASH>..<HASH> 100644
--- a/lib/bummr/outdated.rb
+++ b/lib/bummr/outdated.rb
@@ -1,5 +1,6 @@
 require 'open3'
 require 'singleton'
+require 'bundler'
 
 module Bummr
   class Outdated
Explicity require bundler to detect its version