diff --git a/lib/sprockets/assistant/cli.rb b/lib/sprockets/assistant/cli.rb
index 2e67f7a..e0687d8 100644
--- a/lib/sprockets/assistant/cli.rb
+++ b/lib/sprockets/assistant/cli.rb
@@ -1,5 +1,6 @@
 require 'rack'
 require 'thor'
+require 'bundler'
 
 module Sprockets
   module Assistant