diff --git a/app/services/pings/manager.rb b/app/services/pings/manager.rb
index 148648f..9752f01 100644
--- a/app/services/pings/manager.rb
+++ b/app/services/pings/manager.rb
@@ -1,3 +1,5 @@
+require('net/http')
+
 module Pings
   # Manager
   class Manager