diff --git a/patroni/dcs/__init__.py b/patroni/dcs/__init__.py
index 08fa7d8f..064f1f75 100644
--- a/patroni/dcs/__init__.py
+++ b/patroni/dcs/__init__.py
@@ -1,5 +1,5 @@
 import abc
-import dateutil
+import dateutil.parser
 import importlib
 import inspect
 import json