diff --git a/lib/mrsk/commands/builder.rb b/lib/mrsk/commands/builder.rb
index 074890ce..c72b534a 100644
--- a/lib/mrsk/commands/builder.rb
+++ b/lib/mrsk/commands/builder.rb
@@ -1,3 +1,5 @@
+require "active_support/core_ext/string/filters"
+
 class Mrsk::Commands::Builder < Mrsk::Commands::Base
   delegate :create, :remove, :push, :clean, :pull, :info, to: :target