diff --git a/lib/active_model/serializer.rb b/lib/active_model/serializer.rb
index 0a646dd6..6c3a5ee3 100644
--- a/lib/active_model/serializer.rb
+++ b/lib/active_model/serializer.rb
@@ -1,6 +1,6 @@
 require 'thread_safe'
-require_relative 'serializer/configuration'
-require_relative 'serializer/associations'
+require 'active_model/serializer/configuration'
+require 'active_model/serializer/associations'
 
 module ActiveModel
   class Serializer