diff --git a/apps/charging-engine/src/lib.rs b/apps/charging-engine/src/lib.rs
index c332a5a..99cb2d1 100644
--- a/apps/charging-engine/src/lib.rs
+++ b/apps/charging-engine/src/lib.rs
@@ -1,3 +1,4 @@
+pub mod auth;
 pub mod charging;
 pub mod errors;
 pub mod handlers;