diff --git a/logstash-core/lib/logstash-core/logstash-core.rb b/logstash-core/lib/logstash-core/logstash-core.rb
index a2ce0ca66..6f2f0e864 100644
--- a/logstash-core/lib/logstash-core/logstash-core.rb
+++ b/logstash-core/lib/logstash-core/logstash-core.rb
@@ -8,8 +8,8 @@ end
 require "logstash-core_jars"
 
 # local dev setup
-classes_dir = File.expand_path("../../../build/classes/java/main", __FILE__)
-resources_dir = File.expand_path("../../../build/resources/main", __FILE__)
+classes_dir = File.expand_path("../../../out/production/classes", __FILE__)
+resources_dir = File.expand_path("../../../out/production/resources", __FILE__)
 
 if File.directory?(classes_dir) && File.directory?(resources_dir)
   # if in local dev setup, add target to classpath