diff --git a/lib/domains/blacklist.txt b/lib/domains/blacklist.txt
index 85945eb3ff..175fc7e382 100644
--- a/lib/domains/blacklist.txt
+++ b/lib/domains/blacklist.txt
@@ -83,4 +83,6 @@ student.sbccd.edu
 stu.centralaz.edu
 student.glendale.edu
 xs.hnit.edu.cn
-student.rockvalleycollege.edu
\ No newline at end of file
+student.rockvalleycollege.edu
+sekuco.org
+shitac.tech
\ No newline at end of file