diff --git a/requirements.txt b/requirements.txt
index c034d45..3957e64 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ mkdocs-git-revision-date-localized-plugin==0.12
 mkdocs-git-revision-date-plugin==0.3.1
 mkdocs-material==8.1.9
 mkdocs-material-extensions==1.0.3
-nltk==3.6.2
+nltk==3.6.6
 packaging==21.3
 Pygments==2.11.2
 pymdown-extensions==9.1