diff --git a/doc/requirements.txt b/doc/requirements.txt
index 43beef07f..427ef8211 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,3 +1,3 @@
-mkdocs==1.3.1
+mkdocs==1.4.0
 python-markdown-math
 mkdocs-material