diff --git a/src/crate/client/http.py b/src/crate/client/http.py
index f064dde5..5703e81f 100644
--- a/src/crate/client/http.py
+++ b/src/crate/client/http.py
@@ -343,7 +343,7 @@ def _create_sql_payload(stmt, args, bulk_args):
     return orjson.dumps(
         data,
         default=cratedb_json_encoder,
-        option=orjson.OPT_PASSTHROUGH_DATETIME,
+        option=(orjson.OPT_PASSTHROUGH_DATETIME | orjson.OPT_SERIALIZE_NUMPY),
     )