diff --git a/src/django_clickhouse/clickhouse_models.py b/src/django_clickhouse/clickhouse_models.py
index 1367532..d6054a7 100644
--- a/src/django_clickhouse/clickhouse_models.py
+++ b/src/django_clickhouse/clickhouse_models.py
@@ -213,7 +213,7 @@ class ClickHouseModel(with_metaclass(ClickHouseModelMeta, InfiModel)):
                 with statsd.timer(statsd_key.format('steps.post_sync')):
                     storage.post_sync(import_key)
 
-                    storage.set_last_sync_time(import_key, now())
+                    storage.set_last_sync_time(import_key, datetime.datetime.now())
         except RedisLockTimeoutError:
             pass  # skip this sync round if lock is acquired by another thread
 
@@ -280,7 +280,7 @@ class ClickHouseMultiModel(ClickHouseModel):
 
                 with statsd.timer(statsd_key.format('steps.post_sync')):
                     storage.post_sync(import_key)
-                    storage.set_last_sync_time(import_key, now())
+                    storage.set_last_sync_time(import_key, datetime.datetime.now())
 
         except RedisLockTimeoutError:
             pass  # skip this sync round if lock is acquired by another thread