diff --git a/docs/requirements.txt b/docs/requirements.txt
index 7110d64..3f1dbdb 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -26,7 +26,7 @@ mkdocs==1.2.3
 mock==4.0.1
 more-itertools==8.2.0
 mypy==0.761
-mypy-extensions==0.4.3
+mypy-extensions==0.4.4
 nltk==3.6.6; python_version > "2.7"
 packaging==20.3
 pathspec==0.7.0