diff --git a/apps/charging-engine/src/main.rs b/apps/charging-engine/src/main.rs
index 893b019..fee60d4 100644
--- a/apps/charging-engine/src/main.rs
+++ b/apps/charging-engine/src/main.rs
@@ -1,8 +1,19 @@
 mod api;
-mod charging;
-mod errors;
+mod charging_new as charging;
+mod errors_new as errors;
 mod models;
 
+// Include the new modular components
+mod charging_types;
+mod charging_engine;
+mod credit_management;
+mod rating_billing;
+mod monitoring_sync;
+mod sync_operations;
+mod monitoring;
+mod error_types;
+mod error_helpers;
+
 use anyhow::Result;
 use std::sync::Arc;
 use tracing::info;