diff --git a/blockchain.py b/blockchain.py
index a6c2f65..aba163b 100644
--- a/blockchain.py
+++ b/blockchain.py
@@ -1,7 +1,6 @@
 import hashlib
 import json
 from time import time
-from typing import Any, Dict, List, Optional
 from urllib.parse import urlparse
 from uuid import uuid4