diff --git a/Dockerfile b/Dockerfile
index 8fe2da6..1cc8056 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 FROM node:lts-alpine
 
-RUN npm install --global --production --update-notifier=false markdownlint-cli@0.33.0
+RUN npm install --global --production --update-notifier=false markdownlint-cli@0.43.0
 
 COPY entrypoint.sh /entrypoint.sh
 COPY markdownlint-problem-matcher.json /markdownlint-problem-matcher.json