diff --git a/docs/requirements.txt b/docs/requirements.txt
index 39fb15a..2052efc 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -23,7 +23,7 @@ markdown==3.2.2
 markupsafe==1.1.1
 mkautodoc==0.1.0
 mkdocs==1.2.3
-mock==4.0.1
+mock==4.0.3
 more-itertools==8.2.0
 mypy==0.761
 mypy-extensions==0.4.3