diff --git a/codespell_lib/data/dictionary.txt b/codespell_lib/data/dictionary.txt
index 8c99aee..e0ee477 100644
--- a/codespell_lib/data/dictionary.txt
+++ b/codespell_lib/data/dictionary.txt
@@ -20073,7 +20073,7 @@
 osffsets->offsets
 osffsetting->offsetting
 osicllations->oscillations
-ot->to, of, or,
+ot->to, of, or, not,
 otain->obtain
 otained->obtained
 otains->obtains