diff --git a/lib/omniauth/strategies/crowd/crowd_validator.rb b/lib/omniauth/strategies/crowd/crowd_validator.rb
index d80774c..2deb6b9 100644
--- a/lib/omniauth/strategies/crowd/crowd_validator.rb
+++ b/lib/omniauth/strategies/crowd/crowd_validator.rb
@@ -1,5 +1,6 @@
 require 'nokogiri'
 require 'net/http'
+require 'net/https'
 
 module OmniAuth
   module Strategies