diff --git a/src/test/regress/expected/select_parallel.out b/src/test/regress/expected/select_parallel.out
index 038a62efd7..c131214c10 100644
--- a/src/test/regress/expected/select_parallel.out
+++ b/src/test/regress/expected/select_parallel.out
@@ -252,6 +252,16 @@ explain (costs off)
          Index Cond: (unique1 = 1)
 (5 rows)
 
+-- to increase the parallel query test coverage
+EXPLAIN (analyze, timing off, summary off, costs off) SELECT * FROM tenk1;
+                         QUERY PLAN                          
+-------------------------------------------------------------
+ Gather (actual rows=10000 loops=1)
+   Workers Planned: 4
+   Workers Launched: 4
+   ->  Parallel Seq Scan on tenk1 (actual rows=2000 loops=5)
+(4 rows)
+
 -- provoke error in worker
 select stringu1::int2 from tenk1 where unique1 = 1;
 ERROR:  invalid input syntax for integer: "BAAAAA"
diff --git a/src/test/regress/sql/select_parallel.sql b/src/test/regress/sql/select_parallel.sql
index 9311a775af..e8b7d4f386 100644
--- a/src/test/regress/sql/select_parallel.sql
+++ b/src/test/regress/sql/select_parallel.sql
@@ -100,6 +100,9 @@ set force_parallel_mode=1;
 explain (costs off)
   select stringu1::int2 from tenk1 where unique1 = 1;
 
+-- to increase the parallel query test coverage
+EXPLAIN (analyze, timing off, summary off, costs off) SELECT * FROM tenk1;
+
 -- provoke error in worker
 select stringu1::int2 from tenk1 where unique1 = 1;