diff --git a/pyshamir/shamir.py b/pyshamir/shamir.py
index 0a3f5b0..8b0611d 100644
--- a/pyshamir/shamir.py
+++ b/pyshamir/shamir.py
@@ -1,5 +1,5 @@
 import secrets
-from ._utils import add, mul, div , make_polynomial, interpolate_polynomial
+from ._utils import make_polynomial, interpolate_polynomial
 
 def combine(parts: list[bytearray]) -> bytearray:
     """