diff --git a/docker/Dockerfile b/docker/Dockerfile
index 9b912d0..e3eb7ab 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:20-bullseye-slim
+FROM node:21-bullseye-slim
 
 ENV PAGE_TITLE=ReDoc
 ENV SPEC_URL=https://petstore3.swagger.io/api/v3/openapi.json