diff --git a/py_gen/templates/init.py b/py_gen/templates/init.py
index f66e62a..3b73baa 100644
--- a/py_gen/templates/init.py
+++ b/py_gen/templates/init.py
@@ -38,6 +38,7 @@
 :: #endif
 :: if version >= 4:
 import meter_band
+import bsn_tlv
 :: #endif
 from const import *
 from common import *