diff --git a/conservancy_beancount/beancount_types.py b/conservancy_beancount/beancount_types.py
index 41c1df9d1df65323f572412d6940865665373fe0..a954c4feb7afb5fdaa8a0087aec9110aebfaee36 100644
--- a/conservancy_beancount/beancount_types.py
+++ b/conservancy_beancount/beancount_types.py
@@ -13,6 +13,7 @@ import beancount.core.data as bc_data
 from typing import (
     TYPE_CHECKING,
     Any,
+    Dict,
     FrozenSet,
     Iterable,
     List,
@@ -74,5 +75,5 @@ ALL_DIRECTIVES: FrozenSet[Type[Directive]] = frozenset([
 
 Entries = List[Directive]
 Errors = List[Union[Error, 'errormod.Error']]
-OptionsMap = Mapping[str, Any]
+OptionsMap = Dict[str, Any]
 LoadResult = Tuple[Entries, Errors, OptionsMap]