diff --git a/conservancy_beancount/reports/accrual.py b/conservancy_beancount/reports/accrual.py
index 1649d90ac518bc4556a2fd6b4ddb26e1ab8f83e4..ca3ea1fc28d0d740dde1ed67fac64889c069d28e 100644
--- a/conservancy_beancount/reports/accrual.py
+++ b/conservancy_beancount/reports/accrual.py
@@ -70,7 +70,6 @@ import collections
 import datetime
 import enum
 import logging
-import operator
 import re
 import sys
 import urllib.parse as urlparse
@@ -82,10 +81,8 @@ from typing import (
     Any,
     BinaryIO,
     Callable,
-    Dict,
     Iterable,
     Iterator,
-    FrozenSet,
     List,
     Mapping,
     NamedTuple,