diff --git a/Dockerfile b/Dockerfile
index e0121582e4dffee8ed997d687ec390dd8ca117c2..361784141327d5a23422a7944e542a6fab42df36 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,7 +14,7 @@ RUN pip install mkdocs>=1.1.2 mkdocs-material>=7.1.0 mkdocs-htmlproofer-plugin==
 
 RUN apt-get update && apt-get install -y nodejs npm aspell git git-lfs
 
-RUN npm install -g markdownlint-cli markdown-link-check
+RUN npm install -g markdownlint-cli@0.32.2 markdown-link-check
 
 ###########################################
 # prepare git for automatic merging in CI #
diff --git a/doc.zih.tu-dresden.de/util/download-newest-mermaid.js.sh b/doc.zih.tu-dresden.de/util/download-newest-mermaid.js.sh
index 9986ad6f49e2e739f8a53d7911f4e346196d21a4..d01622e4bba4188479370be170339b1f01308074 100755
--- a/doc.zih.tu-dresden.de/util/download-newest-mermaid.js.sh
+++ b/doc.zih.tu-dresden.de/util/download-newest-mermaid.js.sh
@@ -6,4 +6,4 @@ scriptpath=${BASH_SOURCE[0]}
 basedir=`dirname "$scriptpath"`
 basedir=`dirname "$basedir"`
 cd $basedir/tud_theme/javascripts
-wget https://unpkg.com/mermaid/dist/mermaid.min.js
+wget https://unpkg.com/mermaid@9.4.0/dist/mermaid.min.js