diff --git a/requirements.txt b/requirements.txt
index 9222e4d..a82aed7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 mkdocs==1.5.1
 mkdocs-git-revision-date-localized-plugin==1.2.0
-mkdocs-material==9.1.19
+mkdocs-material==9.1.21
 mkdocs-redirects==1.2.1