diff --git a/dev/.words b/dev/.words
index 846e729a..1471ac26 100644
--- a/dev/.words
+++ b/dev/.words
@@ -48,3 +48,10 @@ Hyndman
 date1
 date2
 favor
+XGBoost
+Chen
+Guestrin
+early_stopping_rounds
+Subsample
+hessian
+overfitting