diff --git a/codespell_lib/data/dictionary.txt b/codespell_lib/data/dictionary.txt
index 53f7b80276..1378a325cd 100644
--- a/codespell_lib/data/dictionary.txt
+++ b/codespell_lib/data/dictionary.txt
@@ -18945,6 +18945,8 @@ diablical->diabolical
 diabling->disabling
 diaciritc->diacritic
 diaciritcs->diacritics
+diagional->diagonal
+diagionals->diagonals
 diagnistic->diagnostic
 diagnoal->diagonal
 diagnoals->diagonals