diff --git a/lib/domains/stoplist.txt b/lib/domains/stoplist.txt
index 2007ad0d75..11c97266bd 100644
--- a/lib/domains/stoplist.txt
+++ b/lib/domains/stoplist.txt
@@ -406,4 +406,5 @@ zictcollege.com
 csu.ph
 sstu-edu.ru
 unisilvaner.info
-kbtut.tj
\ No newline at end of file
+kbtut.tj
+caa.columbia.edu
\ No newline at end of file