diff --git a/requirements.txt b/requirements.txt
index 5d62c32..ebc0ac6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 mkdocs==1.5.2
-mkdocs-material==9.1.20
+mkdocs-material==9.1.21
 mkdocs-glightbox==0.3.4
 mkdocs-htmlproofer-plugin
 pygments