diff --git a/lib/domains/blacklist.txt b/lib/domains/blacklist.txt
index eb90ac0e97..c2d04b96c4 100644
--- a/lib/domains/blacklist.txt
+++ b/lib/domains/blacklist.txt
@@ -70,4 +70,5 @@ email.t.edu.vn
 student.mtsac.edu
 sbcc.edu
 pipeline.sbcc.edu
-ccsf.edu
\ No newline at end of file
+ccsf.edu
+my.riohondo.edu
\ No newline at end of file