diff --git a/.npmignore b/.npmignore
new file mode 100644
index 0000000..07a9522
--- /dev/null
+++ b/.npmignore
@@ -0,0 +1,18 @@
+# Things the published package doesn't need to run the tests or show their results. Everything
+# else ships; note that having this file means .gitignore is no longer consulted.
+
+# the annotated spec's build inputs (the built page and its assets ship)
+/spec/Makefile
+/spec/*.xml
+/spec/lib/
+
+# the Docker image's build files; test-docker.sh pulls the image instead
+/docker/
+
+# repository tooling
+/.editorconfig
+/.github/
+/CNAME
+
+# local state
+/server.pid
diff --git a/README.md b/README.md
index ec67fb0..016b730 100644
--- a/README.md
+++ b/README.md
@@ -38,7 +38,7 @@ Therefore, if you believe a test should change (based upon common behaviour or y
 
 ## Installation
 
-The tests require a recent version of [NodeJS](https://nodejs.org/) (14.8.0 or greater), which includes the `npm` package manager.
+The tests require a recent version of [NodeJS](https://nodejs.org/) (22.19.0 or greater), which includes the `npm` package manager.
 
 To install the most recent source from GitHub (*recommended; things are moving fast*):
 
@@ -54,7 +54,7 @@ Alternatively, for the most recent release:
 
 > npm i --legacy-bundling http-cache-tests
 
-Note that the version in the registry is not necessarily up-to-date.
+Note that the version in the registry is not necessarily up-to-date. The package has what you need to run the server, the command-line client, the browser tests and the scripts below, and to view results locally (`index.html`, the `results` directory and the annotated specification), but not the Docker image's build files or the specification's sources; the scripts that save results create a `results` directory if there isn't one.
 
 
 ## Running tests with scripts
diff --git a/package.json b/package.json
index adf9fbd..e3d4632 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,7 @@
   "author": "Mark Nottingham",
   "license": "BSD-3-Clause",
   "engines": {
-    "node": ">=14.8.0"
+    "node": ">=22.19.0"
   },
   "dependencies": {
     "liquidjs": "^10.9.2",
diff --git a/test-browser.sh b/test-browser.sh
index 019ad4b..3df01e1 100755
--- a/test-browser.sh
+++ b/test-browser.sh
@@ -77,6 +77,7 @@ function test_browser {
 
   sleep 1
   if [ -f "${TARGET}" ] ; then
+    mkdir -p results
     mv "${TARGET}" results/
   fi
 
diff --git a/test-docker.sh b/test-docker.sh
index c4cd386..29ca69d 100755
--- a/test-docker.sh
+++ b/test-docker.sh
@@ -87,6 +87,7 @@ function test_proxy {
   echo "* ${PKG} $(docker container exec tmp_proxies /usr/bin/apt-cache show ${PKG} | grep Version)"
 
   if [[ -z "${TEST_ID}" ]]; then
+    mkdir -p results
     npm run --silent cli --base=http://localhost:${PROXY_PORT} > "results/${PROXY}.json"
   else
     npm run --silent cli --base=http://localhost:${PROXY_PORT} --id="${TEST_ID}"