diff --git a/conservancy_beancount/reports/accrual.py b/conservancy_beancount/reports/accrual.py
index 175f781..7137421 100644
--- a/conservancy_beancount/reports/accrual.py
+++ b/conservancy_beancount/reports/accrual.py
@@ -59,9 +59,9 @@ option::
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 import argparse
+import collections
 import datetime
 import enum
-import collections
 import re
 import sys