diff --git a/Dockerfile b/Dockerfile
index a49d2df..0706029 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,26 +1,7 @@
-FROM node:16-alpine3.11
+FROM node:18-alpine
 
 WORKDIR /app
 
-# build audiowaveform from source
-
-RUN apk add git make cmake gcc g++ libmad-dev libid3tag-dev libsndfile-dev gd-dev boost-dev libgd libpng-dev zlib-dev opus-dev
-RUN apk add zlib-static libpng-static boost-static
-
-RUN apk add autoconf automake libtool gettext
-RUN wget https://github.com/xiph/flac/archive/1.3.3.tar.gz
-RUN tar xzf 1.3.3.tar.gz
-RUN cd flac-1.3.3/ && ./autogen.sh
-RUN cd flac-1.3.3/ && ./configure --enable-shared=no
-RUN cd flac-1.3.3/ && make
-RUN cd flac-1.3.3/ && make install
-
-RUN git clone https://github.com/bbc/audiowaveform.git
-RUN mkdir audiowaveform/build/
-RUN cd audiowaveform/build/ && cmake -D ENABLE_TESTS=0 -D BUILD_STATIC=1 ..
-RUN cd audiowaveform/build/ && make
-RUN cd audiowaveform/build/ && make install
-
 # install chromium
 RUN apk add --no-cache \
     chromium \
diff --git a/README.md b/README.md
index 4578be3..0b60f06 100644
--- a/README.md
+++ b/README.md
@@ -31,7 +31,7 @@ We appreciate filed issues, pull requests and general discussion.
 
 Spacedeck requires:
 
-- Node.js 10.x: Web Server / API. Download: https://nodejs.org
+- Node.js 18.x: Web Server / API. Download: https://nodejs.org
 - Graphicsmagick. On non-Linux, Download: http://www.graphicsmagick.org/ On Linux, install via package manager.
 - Optionally ffmpeg, audiowaveform and ghostscript. See "Optional Dependencies" below.