diff --git a/tests/parallel_test/cases.task b/tests/parallel_test/cases.task
index fc08ff1b32..837521b2fb 100644
--- a/tests/parallel_test/cases.task
+++ b/tests/parallel_test/cases.task
@@ -137,6 +137,7 @@
 ,,y,system-test,./pytest.sh python3 ./test.py -f 99-TDcase/TS-3404.py
 ,,y,system-test,./pytest.sh python3 ./test.py -f 99-TDcase/TS-3581.py
 ,,y,system-test,./pytest.sh python3 ./test.py -f 99-TDcase/TS-3311.py
+,,y,system-test,./pytest.sh python3 ./test.py -f 99-TDcase/TS-3821.py
 
 ,,y,system-test,./pytest.sh python3 ./test.py -f 0-others/balance_vgroups_r1.py -N 6
 ,,y,system-test,./pytest.sh python3 ./test.py -f 0-others/taosShell.py