diff --git a/requirements-docs.txt b/requirements-docs.txt
index fe210c07..e2032004 100644
--- a/requirements-docs.txt
+++ b/requirements-docs.txt
@@ -1,4 +1,4 @@
-mkdocs-material==8.4.0
+mkdocs-material==9.1.1
 plotly==4.14.3
 mkdocstrings==0.19.0
 mkdocstrings-python==0.7.1