diff --git a/Dockerfile.mkdocs b/Dockerfile.mkdocs
index aa0b6eb3..578d7bf2 100644
--- a/Dockerfile.mkdocs
+++ b/Dockerfile.mkdocs
@@ -1,2 +1,2 @@
-FROM squidfunk/mkdocs-material:9.5.17
+FROM squidfunk/mkdocs-material:9.5.20
 RUN pip install -r docs/requirements.txt