diff --git a/lib/domains/stoplist.txt b/lib/domains/stoplist.txt
index 2f8d047a05..c3fb9d3f59 100644
--- a/lib/domains/stoplist.txt
+++ b/lib/domains/stoplist.txt
@@ -185,4 +185,5 @@ hit.edu.cn
 stu.parkland.edu
 cc.peralta.edu
 tongji.edu.cn
-ctuonline.edu
\ No newline at end of file
+ctuonline.edu
+student.ptithcm.edu.vn
\ No newline at end of file