diff --git a/conservancy_beancount/reports/balance_sheet.py b/conservancy_beancount/reports/balance_sheet.py
index 3125b4e66c53a29037303522ccf6db38f56d7e3a..a07292efa1a16a31297d9fa5c750455e1164b53e 100644
--- a/conservancy_beancount/reports/balance_sheet.py
+++ b/conservancy_beancount/reports/balance_sheet.py
@@ -21,7 +21,6 @@ from typing import (
     Callable,
     Collection,
     Dict,
-    Hashable,
     Iterable,
     Iterator,
     List,