diff --git a/tonic/slicers.py b/tonic/slicers.py
index 743c556d..dde46b61 100644
--- a/tonic/slicers.py
+++ b/tonic/slicers.py
@@ -1,8 +1,8 @@
 from dataclasses import dataclass
-from typing import Any, List, Tuple, runtime_checkable
+from typing import Any, List, Tuple
 
 import numpy as np
-from typing_extensions import Protocol
+from typing_extensions import Protocol, runtime_checkable
 
 
 @runtime_checkable