diff --git a/tensorizer/serialization.py b/tensorizer/serialization.py
index 3b14e7ea..af4c3716 100644
--- a/tensorizer/serialization.py
+++ b/tensorizer/serialization.py
@@ -221,7 +221,7 @@ def deserialized_length(self):
         if self.data_length > 0:
             return self.data_length
         element_size: int = numpy.dtype(self.dtype).itemsize
-        num_elements: int = numpy.product(self.shape)
+        num_elements: int = numpy.prod(self.shape)
         return element_size * num_elements