diff --git a/Dockerfile b/Dockerfile
index 4deb248..4c915e6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -19,9 +19,9 @@ RUN apt-get update && apt-get upgrade -y && \
         ca-certificates \
         libfontconfig1
 # Node.js is required to run this application.
-RUN echo "# Node.js 16.x for Debian 11 (codename bullseye)" > /etc/apt/sources.list.d/nodejs.list \
-  && echo "deb https://deb.nodesource.com/node_16.x bullseye main" >> /etc/apt/sources.list.d/nodejs.list \
-  && echo "deb-src https://deb.nodesource.com/node_16.x bullseye main" >> /etc/apt/sources.list.d/nodejs.list
+RUN echo "# Node.js 18.x for Debian 11 (codename bullseye)" > /etc/apt/sources.list.d/nodejs.list \
+  && echo "deb https://deb.nodesource.com/node_18.x bullseye main" >> /etc/apt/sources.list.d/nodejs.list \
+  && echo "deb-src https://deb.nodesource.com/node_18.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.
diff --git a/changelog.md b/changelog.md
index f9d596e..c431d4c 100644
--- a/changelog.md
+++ b/changelog.md
@@ -13,7 +13,7 @@ change in this application.
 ## Version 5.?.? (2024-05-??)
 
 * __[maintenance]__
-Update Dockerfile to use Node.js 16 instead of Node.js 14.
+Update Dockerfile to use Node.js 18 instead of Node.js 14.
 
 ## Version 5.1.2 (2024-03-31)