diff --git a/smartcar/__init__.py b/smartcar/__init__.py
index 86685748..fb9e11f8 100644
--- a/smartcar/__init__.py
+++ b/smartcar/__init__.py
@@ -12,6 +12,7 @@
     get_api_version,
     set_api_version,
     verify_payload,
+    is_expired,
 )
 
 from smartcar.vehicle import Vehicle