diff --git a/README.md b/README.md
index af7b6589..0bfb9b88 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,12 @@
 # node-build-prerelease
 
-[![Build Status](https://travis-ci.org/nodenv/node-build-prerelease.svg?branch=master)](https://travis-ci.org/nodenv/node-build-prerelease)
-
 node-build-prerelease is an [nodenv][] plugin (or more precisely, a [node-build][] plugin) that provides build definitions for Node.js prereleases (primarily release candidates).
 
+[![Tests](https://img.shields.io/github/actions/workflow/status/nodenv/node-build-prerelease/test.yml?label=tests&logo=github)](https://github.com/nodenv/node-build-prerelease/actions/workflows/test.yml)
+[![Latest Homebrew Release](<https://img.shields.io/badge/dynamic/regex?url=https%3A%2F%2Fraw.githubusercontent.com%2Fnodenv%2Fhomebrew-nodenv%2Frefs%2Fheads%2Fmain%2FFormula%2Fnode-build-prerelease.rb&logo=homebrew&logoColor=white&label=homebrew-nodenv&color=orange&search=archive%2Frefs%2Ftags%2Fv(%3F%3Cversion%3E%5Cd%2B.*).tar.gz&replace=v%24%3Cversion%3E>)](https://github.com/nodenv/homebrew-nodenv/blob/main/Formula/node-build-prerelease.rb)
+[![Latest GitHub Release](https://img.shields.io/github/v/release/nodenv/node-build-prerelease?label=github&logo=github&sort=semver)](https://github.com/nodenv/node-build-prerelease/releases/latest)
+[![Latest npm Release](https://img.shields.io/npm/v/@nodenv/node-build-prerelease?logo=npm&logoColor=white)](https://www.npmjs.com/package/@nodenv/node-build-prerelease/v/latest)
+
 <!-- toc -->
 
 - [Installation](#installation)
diff --git a/script/preversion b/script/preversion
index 98c03c05..f33dfc45 100755
--- a/script/preversion
+++ b/script/preversion
@@ -1,29 +1,79 @@
 #!/usr/bin/env bash
-# Usage: script/release-precheck
+#
+# Ensures repo is ready to release.
+#
+# Usage: script/preversion [-v] [--] [FILES...]
+#
+# Options:
+#   -o     Detect unreleased changes in (and only in) FILES
+#   -v     Print log since last tag
+#   FILES  Files to check for changes.
+#          [default: package.json#files read via $npm_package_files_*]
 #
 # - fetch from origin
 # - ensure it isn't already tagged
-# - ensure currently on master branch
+# - ensure currently on main branch
 # - ensure there are bin or definition changes to release
 
 set -euo pipefail
 
-git fetch --quiet --tags origin master
+[ -n "${DEBUG-}" ] && set -x
+
+unset verbose strict
+while getopts "ov" opt; do
+	case "$opt" in
+	o) strict=1 ;;
+	v) verbose=1 ;;
+	*) break ;;
+	esac
+done
+shift $((OPTIND - 1))
+
+if [ "${1-}" = -- ]; then
+	shift
+fi
+
+abort() {
+	echo "Aborting: $1" >&2
+	exit "${2:-1}"
+}
+
+declare -a files
+if [ "$#" -gt 0 ]; then
+	files=("$@")
+else
+	IFS=" " read -r -a files <<<"$(node -p 'require("./package").files.join(" ")')"
+fi
+
+git fetch --quiet --tags origin main
 
 existing="$(git tag --points-at HEAD)"
 if [ -n "$existing" ]; then
-	echo "Aborting: HEAD is already tagged as '${existing}'" >&2
-	exit 1
+	abort "HEAD is already tagged as '${existing}'"
 fi
 
 current_branch="$(git symbolic-ref --short HEAD)"
-if [ "$current_branch" != master ]; then
-	echo "Aborting: Not currently on master branch" >&2
-	exit 1
+if [ "$current_branch" != main ]; then
+	abort "Not currently on main branch" 2
 fi
 
 previous_tag="$(git describe --tags --abbrev=0)"
-if git diff --quiet "${previous_tag}..HEAD" -- bin share; then
-	echo "Aborting: No features to release since '${previous_tag}'" >&2
-	exit 1
+if git diff --quiet "${previous_tag}..HEAD" -- "${files[@]}"; then
+	abort "No features to release since '${previous_tag}'"
+fi
+
+allowed_changes=("${files[@]}" .github script *.md)
+allowed_changes=("${allowed_changes[@]/#/\':!\'}") # prefix pathspecs with git's "ignore"
+
+if [ -n "${strict-}" ] &&
+	! git diff --quiet "${previous_tag}..HEAD" -- "${allowed_changes[@]}"; then
+	{
+		echo "git diff --stat ${previous_tag}..HEAD -- ${allowed_changes[*]}"
+		git diff --stat "${previous_tag}..HEAD" -- "${allowed_changes[@]}"
+	} >&2
+	abort "Changes detected outside '${allowed_changes[*]#:!}'" 2
+fi
+
+if [ -n "${verbose-}" ]; then
+	git log "$previous_tag"... --oneline -- "${files[@]}"
 fi