diff --git a/Dockerfile b/Dockerfile
index bd2cd31..07252a1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM debian:12-slim
+FROM debian:11-slim
 MAINTAINER Dirk Stolle <striezel-dev@web.de>
 
 LABEL org.opencontainers.image.authors="Dirk Stolle <striezel-dev@web.de>"
@@ -7,21 +7,22 @@ LABEL org.opencontainers.image.licenses=GPL-3.0-or-later
 
 # Always update package lists and install updates first.
 # HTTPS transport for APT is required to get the Node.js packages.
-# curl, GnuPG and CA certificates are needed to get the key for the Nodesource
+# wget, GnuPG and CA certificates are needed to get the key for the Nodesource
 # APT repository.
 # Finally, libfontconfig is required during execution to get font rendering.
-ENV DEBIAN_FRONTEND=noninteractive
 RUN apt-get update && apt-get upgrade -y && \
     apt-get install --no-install-recommends -y \
         apt-transport-https \
-        curl \
+        wget \
         gnupg2 \
         dirmngr \
         ca-certificates \
         libfontconfig1
 # Node.js is required to run this application.
-RUN curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key | gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg && \
-    echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_20.x nodistro main" > /etc/apt/sources.list.d/nodejs.list
+RUN echo "# Node.js 14.x for Debian 11 (codename bullseye)" > /etc/apt/sources.list.d/nodejs.list \
+  && echo "deb https://deb.nodesource.com/node_14.x bullseye main" >> /etc/apt/sources.list.d/nodejs.list \
+  && echo "deb-src https://deb.nodesource.com/node_14.x bullseye main" >> /etc/apt/sources.list.d/nodejs.list
+RUN apt-key adv --fetch-keys https://deb.nodesource.com/gpgkey/nodesource.gpg.key
 RUN apt-get update && apt-get install --no-install-recommends -y nodejs
 # Create directory for application.
 RUN mkdir -p /opt/export-server
diff --git a/changelog.md b/changelog.md
index a8d71e8..5048270 100644
--- a/changelog.md
+++ b/changelog.md
@@ -10,12 +10,6 @@ Since [ECharts](https://echarts.apache.org/) is the main dependency of this
 application, major version changes in ECharts will also trigger a major version
 change in this application.
 
-## Version 5.?.? (2024-05-??)
-
-* __[maintenance]__
-Update Dockerfile to use Debian 12 and Node.js 20 instead of Debian 11 and
-Node.js 14.
-
 ## Version 5.1.2 (2024-03-31)
 
 * __[maintenance]__