diff --git a/lib/batch_loader/graphql.rb b/lib/batch_loader/graphql.rb
index 372542b..2924caa 100644
--- a/lib/batch_loader/graphql.rb
+++ b/lib/batch_loader/graphql.rb
@@ -33,6 +33,8 @@ def self.instrument(type, field)
     end
 
     def self.wrap(batch_loader)
+      warn "DEPRECATION WARNING: using BatchLoader.for in GraphQL is deprecated. Use BatchLoader::GraphQL.for instead or return BatchLoader::GraphQL.wrap from your resolver."
+
       BatchLoader::GraphQL.new.tap do |graphql|
         graphql.batch_loader = batch_loader
       end