diff --git a/lib/domains/blacklist.txt b/lib/domains/blacklist.txt
index ba4633ff07..47c127b95d 100644
--- a/lib/domains/blacklist.txt
+++ b/lib/domains/blacklist.txt
@@ -46,4 +46,5 @@ mail.mzr.me
 mail.hrka.net 
 abcda.tech
 t.odmail.cn
-ccc.edu
\ No newline at end of file
+ccc.edu
+nfs.edu.rs
\ No newline at end of file