diff --git a/docs/requirements.txt b/docs/requirements.txt
index 9daf569..0404a2d 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1 +1 @@
-mkdocs-material==9.1.19
\ No newline at end of file
+mkdocs-material==9.1.21
\ No newline at end of file