diff --git a/docs/requirements.txt b/docs/requirements.txt
index a402860..d5077b9 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -14,7 +14,7 @@ Markdown>=3.3.4
 MarkupSafe>=2.0.1
 mkdocs>=1.6.1
 more-itertools>=8.7.0
-nltk>=3.6.2
+nltk>=3.10.3
 packaging>=20.9
 pluggy>=0.13.1
 py>=1.10.0