diff --git a/README.md b/README.md
index 6e91ed2..cdc7016 100644
--- a/README.md
+++ b/README.md
@@ -8,9 +8,9 @@ Allow multiple Node.js processes to listen on same port, with `SO_REUSEPORT`.
 
 ## Supported OS
 
-Only Linux is supported by far.
+Only Linux is supported.
 
-Prebuilt binaries for `linux-x64-glibc` `linux-amd64-musl` `linux-arm64` `linux-armv7` are shipped in the npm package.
+The npm package contains prebuilt binaries for `linux-x64` `linux-arm64` `linux-armv7`.
 
 If your platform is not listed above, `SO_REUSEPORT` will not be set. Feel free to create an issue if other Linux variant is required.
 
diff --git a/demo/docker-compose.yaml b/demo/docker-compose.yaml
index 0ccf4c9..772e82b 100644
--- a/demo/docker-compose.yaml
+++ b/demo/docker-compose.yaml
@@ -4,6 +4,7 @@ services:
     build:
       context: ..
       dockerfile: demo/Dockerfile
+      # dockerfile: demo/Dockerfile-alpine
     # image: ghcr.io/jokester/publicaddr:pr-1
     command: npm start
     working_dir: /opt/publicaddr/demo
diff --git a/demo/package-lock.json b/demo/package-lock.json
index 18e6700..d9a9220 100644
--- a/demo/package-lock.json
+++ b/demo/package-lock.json
@@ -10,7 +10,7 @@
       "license": "BSD",
       "dependencies": {
         "@jokester/ts-commonutil": "^0.4.1",
-        "publicaddr": "0.4.2-pre3"
+        "publicaddr": "0.4.2-pre4"
       },
       "devDependencies": {
         "@types/node": "^18.15.3",
@@ -2210,9 +2210,9 @@
       }
     },
     "node_modules/publicaddr": {
-      "version": "0.4.2-pre3",
-      "resolved": "https://registry.npmjs.org/publicaddr/-/publicaddr-0.4.2-pre3.tgz",
-      "integrity": "sha512-ZHBMkt2WPu3fjSep5/lmjhDjRnhkk29Syn/6jhcGc3AAjpKqn3Cy37B4pNIyyhRl8dMGg7uAG1O/bdUIP0tBng==",
+      "version": "0.4.2-pre4",
+      "resolved": "https://registry.npmjs.org/publicaddr/-/publicaddr-0.4.2-pre4.tgz",
+      "integrity": "sha512-0dleDKrZsyuEVHzCjbLtAWndqbrYqgLYdEKlzxlZXhCk66CI5ap4vcVtkIrYLcPSd6RwqZ8JKjO3uOEhvSu44w==",
       "dependencies": {
         "node-gyp-build": "^4.6.0"
       },
@@ -4506,9 +4506,9 @@
       "dev": true
     },
     "publicaddr": {
-      "version": "0.4.2-pre3",
-      "resolved": "https://registry.npmjs.org/publicaddr/-/publicaddr-0.4.2-pre3.tgz",
-      "integrity": "sha512-ZHBMkt2WPu3fjSep5/lmjhDjRnhkk29Syn/6jhcGc3AAjpKqn3Cy37B4pNIyyhRl8dMGg7uAG1O/bdUIP0tBng==",
+      "version": "0.4.2-pre4",
+      "resolved": "https://registry.npmjs.org/publicaddr/-/publicaddr-0.4.2-pre4.tgz",
+      "integrity": "sha512-0dleDKrZsyuEVHzCjbLtAWndqbrYqgLYdEKlzxlZXhCk66CI5ap4vcVtkIrYLcPSd6RwqZ8JKjO3uOEhvSu44w==",
       "requires": {
         "node-gyp-build": "^4.6.0"
       }
diff --git a/demo/package.json b/demo/package.json
index d846682..2b771e7 100644
--- a/demo/package.json
+++ b/demo/package.json
@@ -14,7 +14,7 @@
   "license": "BSD",
   "dependencies": {
     "@jokester/ts-commonutil": "^0.4.1",
-    "publicaddr": "0.4.2-pre3"
+    "publicaddr": "0.4.2-pre4"
   },
   "devDependencies": {
     "@types/node": "^18.15.3",
diff --git a/package-lock.json b/package-lock.json
index 9c48013..e66b659 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "publicaddr",
-  "version": "0.4.2-pre4",
+  "version": "0.4.2",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "publicaddr",
-      "version": "0.4.2-pre4",
+      "version": "0.4.2",
       "license": "BSD",
       "dependencies": {
         "node-gyp-build": "^4.6.0"
diff --git a/package.json b/package.json
index 0467016..f21cc76 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "publicaddr",
-  "version": "0.4.2-pre4",
+  "version": "0.4.2",
   "description": "Allow Node.js to listen on TCP with SO_REUSEPORT",
   "repository": {
     "type": "git",