diff --git a/lib/domains/stoplist.txt b/lib/domains/stoplist.txt
index d52e921823..96589dbde8 100644
--- a/lib/domains/stoplist.txt
+++ b/lib/domains/stoplist.txt
@@ -239,4 +239,5 @@ mail.sustc.edu.cn
 alumni.usp.br
 cdmc.edu.cn
 hufe.edu.cn
-alumni.hust.edu.cn
\ No newline at end of file
+alumni.hust.edu.cn
+stu.ctcd.edu
\ No newline at end of file