diff --git a/merkly/utils.py b/merkly/utils.py
index e3719e5..250d969 100644
--- a/merkly/utils.py
+++ b/merkly/utils.py
@@ -46,7 +46,6 @@ def keccak(data: bytes) -> bytes:
 
     return keccaky.hash_it_bytes(data)
 
-
 def half(list_item: List[int]) -> Tuple[int, int]:
     """
     # Slice a `x: List[int]` in a pairs