diff --git a/cashu/mint/crud.py b/cashu/mint/crud.py
index 83b7e9d..19d0f0c 100644
--- a/cashu/mint/crud.py
+++ b/cashu/mint/crud.py
@@ -1,6 +1,6 @@
 from typing import Optional
 
-from cashu.core.base import Invoice, Proof, MintKeyset
+from cashu.core.base import Invoice, MintKeyset, Proof
 from cashu.core.db import Connection, Database
 
 
diff --git a/cashu/mint/ledger.py b/cashu/mint/ledger.py
index 6d96fb0..561e273 100644
--- a/cashu/mint/ledger.py
+++ b/cashu/mint/ledger.py
@@ -3,8 +3,10 @@ Implementation of https://gist.github.com/phyro/935badc682057f418842c72961cf096c
 """
 
 import math
-from typing import List, Set, Dict
+from typing import Dict, List, Set
+
 from loguru import logger
+
 import cashu.core.b_dhke as b_dhke
 import cashu.core.bolt11 as bolt11
 from cashu.core.base import (
@@ -24,14 +26,14 @@ from cashu.core.settings import LIGHTNING, MAX_ORDER
 from cashu.core.split import amount_split
 from cashu.lightning import WALLET
 from cashu.mint.crud import (
+    get_keyset,
     get_lightning_invoice,
     get_proofs_used,
     invalidate_proof,
+    store_keyset,
     store_lightning_invoice,
     store_promise,
     update_lightning_invoice,
-    get_keyset,
-    store_keyset,
 )
 
 
diff --git a/cashu/wallet/crud.py b/cashu/wallet/crud.py
index 50e3676..12d8401 100644
--- a/cashu/wallet/crud.py
+++ b/cashu/wallet/crud.py
@@ -1,10 +1,7 @@
 import time
 from typing import Any, List, Optional
 
-from cashu.core.base import P2SHScript, Proof
-from cashu.core.db import Connection, Database
-
-from cashu.core.base import KeyBase, WalletKeyset
+from cashu.core.base import KeyBase, P2SHScript, Proof, WalletKeyset
 from cashu.core.db import Connection, Database
 
 
diff --git a/cashu/wallet/wallet.py b/cashu/wallet/wallet.py
index a75ce22..32de07c 100644
--- a/cashu/wallet/wallet.py
+++ b/cashu/wallet/wallet.py
@@ -14,12 +14,12 @@ from cashu.core.base import (
     BlindedSignature,
     CheckFeesRequest,
     CheckRequest,
-    WalletKeyset,
     MeltRequest,
     MintRequest,
     P2SHScript,
     Proof,
     SplitRequest,
+    WalletKeyset,
 )
 from cashu.core.db import Database
 from cashu.core.script import (
@@ -32,14 +32,14 @@ from cashu.core.secp import PublicKey
 from cashu.core.settings import DEBUG
 from cashu.core.split import amount_split
 from cashu.wallet.crud import (
+    get_keyset,
     get_proofs,
     invalidate_proof,
     secret_used,
+    store_keyset,
     store_p2sh,
     store_proof,
     update_proof_reserved,
-    get_keyset,
-    store_keyset,
 )