diff --git a/superset/utils/date_parser.py b/superset/utils/date_parser.py
index a72d49fbf..76a136969 100644
--- a/superset/utils/date_parser.py
+++ b/superset/utils/date_parser.py
@@ -324,7 +324,9 @@ class EvalDateTruncFunc:  # pylint: disable=too-few-public-methods
                 month=1, day=1, hour=0, minute=0, second=0, microsecond=0
             )
         if unit == "quarter":
-            dttm = pd.Period(pd.Timestamp(dttm), freq="Q").to_timestamp()
+            dttm = (
+                pd.Period(pd.Timestamp(dttm), freq="Q").to_timestamp().to_pydatetime()
+            )
         elif unit == "month":
             dttm = dttm.replace(day=1, hour=0, minute=0, second=0, microsecond=0)
         elif unit == "week":