diff --git a/src/test/regress/serial_schedule b/src/test/regress/serial_schedule
index 68ac56acdb..f86f5c5682 100644
--- a/src/test/regress/serial_schedule
+++ b/src/test/regress/serial_schedule
@@ -192,6 +192,7 @@ test: hash_part
 test: indexing
 test: partition_aggregate
 test: partition_info
+test: tuplesort
 test: event_trigger
 test: fast_default
 test: stats