diff --git a/test/bench/Dockerfile b/test/bench/Dockerfile
index bd9ca91b..f12e5a42 100644
--- a/test/bench/Dockerfile
+++ b/test/bench/Dockerfile
@@ -5,7 +5,7 @@ ARG BRANCH=main
 RUN apt-get -y update && apt-get install -y build-essential curl git
 
 # Install latest Node.js LTS
-RUN curl -fsSL https://deb.nodesource.com/setup_16.x | bash -
+RUN curl -fsSL https://deb.nodesource.com/setup_18.x | bash -
 RUN apt-get install -y nodejs
 
 # Install benchmark dependencies
@@ -23,4 +23,9 @@ RUN cat /etc/os-release | grep VERSION=
 RUN node -v
 
 WORKDIR /tmp/sharp/test/bench
+
+# Workaround for: https://github.com/emscripten-core/emscripten/pull/16917
+# This could be removed once Squoosh is an optional dependency.
+ENV NODE_OPTIONS="--no-experimental-fetch"
+
 CMD [ "node", "perf" ]
diff --git a/test/bench/package.json b/test/bench/package.json
index e4e08ccf..ee43e9c5 100644
--- a/test/bench/package.json
+++ b/test/bench/package.json
@@ -9,15 +9,15 @@
   },
   "dependencies": {
     "@squoosh/cli": "0.7.3",
-    "@squoosh/lib": "0.4.0",
+    "@squoosh/lib": "0.5.3",
     "async": "3.2.4",
     "benchmark": "2.1.4",
     "gm": "1.25.0",
     "imagemagick": "0.1.3",
-    "jimp": "0.22.7"
+    "jimp": "0.22.10"
   },
   "optionalDependencies": {
-    "@tensorflow/tfjs-node": "4.2.0",
+    "@tensorflow/tfjs-node": "4.9.0",
     "mapnik": "4.5.9"
   },
   "license": "Apache-2.0",
diff --git a/test/bench/perf.js b/test/bench/perf.js
index 9a267231..2671ac20 100644
--- a/test/bench/perf.js
+++ b/test/bench/perf.js
@@ -109,7 +109,7 @@ async.series({
     jpegSuite.add('squoosh-lib-buffer-buffer', {
       defer: true,
       fn: function (deferred) {
-        const pool = new squoosh.ImagePool();
+        const pool = new squoosh.ImagePool(os.cpus().length);
         const image = pool.ingestImage(inputJpgBuffer);
         image.decoded
           .then(function () {
@@ -707,7 +707,7 @@ async.series({
     pngSuite.add('squoosh-lib-buffer-buffer', {
       defer: true,
       fn: function (deferred) {
-        const pool = new squoosh.ImagePool();
+        const pool = new squoosh.ImagePool(os.cpus().length);
         const image = pool.ingestImage(inputPngBuffer);
         image.decoded
           .then(function () {