diff --git a/Dockerfile b/Dockerfile
index 6cbd872..2db949c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM docker.io/squidfunk/mkdocs-material:9.1.19
+FROM docker.io/squidfunk/mkdocs-material:9.1.20
 
 COPY requirements.txt .