diff --git a/nkms/network/blockchain_client.py b/nkms/network/blockchain_client.py
index b1fe01ce1..72055aa0e 100644
--- a/nkms/network/blockchain_client.py
+++ b/nkms/network/blockchain_client.py
@@ -1,3 +1 @@
-from typing import List
-
-_ursulas_on_blockchain:List = []
\ No newline at end of file
+_ursulas_on_blockchain = []
\ No newline at end of file