diff --git a/cashu/core/base.py b/cashu/core/base.py
index 75d6a61..6310df0 100644
--- a/cashu/core/base.py
+++ b/cashu/core/base.py
@@ -1,12 +1,12 @@
 from sqlite3 import Row
-from typing import List, Union, Dict, Any
-from cashu.core.crypto import derive_keyset_id, derive_keys, derive_pubkeys
-from cashu.core.secp import PrivateKey, PublicKey
+from typing import Any, Dict, List, Union
 
 from loguru import logger
-
 from pydantic import BaseModel
 
+from cashu.core.crypto import derive_keys, derive_keyset_id, derive_pubkeys
+from cashu.core.secp import PrivateKey, PublicKey
+
 
 class CashuError(BaseModel):
     code = "000"
diff --git a/cashu/core/crud.py b/cashu/core/crud.py
index 6c107ea..0ed3f44 100644
--- a/cashu/core/crud.py
+++ b/cashu/core/crud.py
@@ -1,6 +1,6 @@
 from typing import Optional
 
-from cashu.core.base import Keyset, KeyBase
+from cashu.core.base import KeyBase, Keyset
 from cashu.core.db import Connection, Database
 
 
diff --git a/cashu/core/crypto.py b/cashu/core/crypto.py
index c57aa4b..76255f0 100644
--- a/cashu/core/crypto.py
+++ b/cashu/core/crypto.py
@@ -1,5 +1,6 @@
 import hashlib
 from typing import Dict, List
+
 from cashu.core.secp import PrivateKey, PublicKey
 from cashu.core.settings import MAX_ORDER
 
diff --git a/cashu/mint/ledger.py b/cashu/mint/ledger.py
index bb689e8..e3ab10c 100644
--- a/cashu/mint/ledger.py
+++ b/cashu/mint/ledger.py
@@ -7,8 +7,8 @@ from typing import List, Set
 
 import cashu.core.b_dhke as b_dhke
 import cashu.core.bolt11 as bolt11
-from cashu.core.base import BlindedMessage, BlindedSignature, Invoice, Proof, Keyset
-from cashu.core.crypto import derive_keyset_id, derive_keys, derive_pubkeys
+from cashu.core.base import BlindedMessage, BlindedSignature, Invoice, Keyset, Proof
+from cashu.core.crypto import derive_keys, derive_keyset_id, derive_pubkeys
 from cashu.core.db import Database
 from cashu.core.helpers import fee_reserve
 from cashu.core.script import verify_script
diff --git a/cashu/mint/startup.py b/cashu/mint/startup.py
index 043e9a0..0fdc108 100644
--- a/cashu/mint/startup.py
+++ b/cashu/mint/startup.py
@@ -2,10 +2,10 @@ import asyncio
 
 from loguru import logger
 
+from cashu.core.migrations import migrate_databases
 from cashu.core.settings import CASHU_DIR, LIGHTNING
 from cashu.lightning import WALLET
 from cashu.mint import migrations
-from cashu.core.migrations import migrate_databases
 
 from . import ledger
 
diff --git a/cashu/wallet/wallet.py b/cashu/wallet/wallet.py
index e257abf..5a42241 100644
--- a/cashu/wallet/wallet.py
+++ b/cashu/wallet/wallet.py
@@ -2,7 +2,7 @@ import base64
 import json
 import secrets as scrts
 import uuid
-from typing import List, Dict
+from typing import Dict, List
 
 import requests
 from loguru import logger
@@ -13,13 +13,14 @@ from cashu.core.base import (
     BlindedSignature,
     CheckFeesRequest,
     CheckRequest,
+    Keyset,
     MeltRequest,
     MintRequest,
     P2SHScript,
     Proof,
     SplitRequest,
-    Keyset,
 )
+from cashu.core.crud import get_keyset, store_keyset
 from cashu.core.db import Database
 from cashu.core.script import (
     step0_carol_checksig_redeemscrip,
@@ -38,7 +39,6 @@ from cashu.wallet.crud import (
     store_proof,
     update_proof_reserved,
 )
-from cashu.core.crud import store_keyset, get_keyset
 
 
 class LedgerAPI: