diff --git a/Dockerfile b/Dockerfile
index ab904bc..59f8e43 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM squidfunk/mkdocs-material:9.6.20
+FROM squidfunk/mkdocs-material:9.6.21
 
 COPY start.sh /usr/local/bin/