diff --git a/lib/bitcoin/payments.rb b/lib/bitcoin/payments.rb
index 4f1a0f8..32fb429 100644
--- a/lib/bitcoin/payments.rb
+++ b/lib/bitcoin/payments.rb
@@ -1,3 +1,4 @@
+require 'active_support/all'
 require 'protobuf'
 
 module Bitcoin