diff --git a/CHANGELOG.md b/CHANGELOG.md
index c3876bad3071..45a30402b3f1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,7 @@
 <!--
 	Add placeholder for next release with `wip` snippet
 -->
-## __WORK IN PROGRESS__
+## 12.9.0 (2024-05-21)
 This release contains several bugfixes and improvements for Zniffer, as well as fixing some deviations from the Z-Wave specification.
 
 ### Features
diff --git a/package.json b/package.json
index 9882003d8bb4..e06c359ec18f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@zwave-js/repo",
-  "version": "12.8.1",
+  "version": "12.9.0",
   "private": true,
   "description": "Z-Wave driver written entirely in JavaScript/TypeScript",
   "keywords": [],
diff --git a/packages/cc/package.json b/packages/cc/package.json
index 6045b201431f..24878a0885c1 100644
--- a/packages/cc/package.json
+++ b/packages/cc/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@zwave-js/cc",
-  "version": "12.8.1",
+  "version": "12.9.0",
   "description": "zwave-js: Command Classes",
   "keywords": [],
   "publishConfig": {
diff --git a/packages/config/package.json b/packages/config/package.json
index 15afc8b5f8ba..de916aa7a681 100644
--- a/packages/config/package.json
+++ b/packages/config/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@zwave-js/config",
-  "version": "12.8.0",
+  "version": "12.9.0",
   "description": "zwave-js: configuration files",
   "publishConfig": {
     "access": "public"
diff --git a/packages/core/package.json b/packages/core/package.json
index 971dff265bb6..2cd347dc785d 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@zwave-js/core",
-  "version": "12.8.0",
+  "version": "12.9.0",
   "description": "zwave-js: core components",
   "keywords": [],
   "publishConfig": {
diff --git a/packages/eslint-plugin/package.json b/packages/eslint-plugin/package.json
index 44ba2f224f1c..fd062bc8172b 100644
--- a/packages/eslint-plugin/package.json
+++ b/packages/eslint-plugin/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@zwave-js/eslint-plugin",
-  "version": "12.8.0",
+  "version": "12.9.0",
   "description": "zwave-js: custom ESLint rules",
   "private": true,
   "keywords": [],
diff --git a/packages/flash/package.json b/packages/flash/package.json
index 0e78eb63567b..e5090f64e291 100644
--- a/packages/flash/package.json
+++ b/packages/flash/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@zwave-js/flash",
-  "version": "12.8.1",
+  "version": "12.9.0",
   "description": "zwave-js: firmware flash utility",
   "keywords": [],
   "publishConfig": {
diff --git a/packages/host/package.json b/packages/host/package.json
index 918a60615ad8..6f574b2cac1b 100644
--- a/packages/host/package.json
+++ b/packages/host/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@zwave-js/host",
-  "version": "12.8.0",
+  "version": "12.9.0",
   "description": "zwave-js: Host abstractions",
   "keywords": [],
   "publishConfig": {
diff --git a/packages/maintenance/package.json b/packages/maintenance/package.json
index d9cc72c14ede..bfb117c1b221 100644
--- a/packages/maintenance/package.json
+++ b/packages/maintenance/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@zwave-js/maintenance",
-  "version": "12.8.0",
+  "version": "12.9.0",
   "description": "zwave-js: maintenance scripts",
   "private": true,
   "keywords": [],
diff --git a/packages/nvmedit/package.json b/packages/nvmedit/package.json
index 99bc465d447b..7b91d6383ecc 100644
--- a/packages/nvmedit/package.json
+++ b/packages/nvmedit/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@zwave-js/nvmedit",
-  "version": "12.8.0",
+  "version": "12.9.0",
   "description": "zwave-js: library to edit NVM backups",
   "keywords": [],
   "publishConfig": {
diff --git a/packages/serial/package.json b/packages/serial/package.json
index aed9154dc28f..2f8b80c5562f 100644
--- a/packages/serial/package.json
+++ b/packages/serial/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@zwave-js/serial",
-  "version": "12.8.0",
+  "version": "12.9.0",
   "description": "zwave-js: Serialport driver",
   "publishConfig": {
     "access": "public"
diff --git a/packages/testing/package.json b/packages/testing/package.json
index 345d972fb633..5e44b0dbad54 100644
--- a/packages/testing/package.json
+++ b/packages/testing/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@zwave-js/testing",
-  "version": "12.8.0",
+  "version": "12.9.0",
   "description": "zwave-js: testing utilities",
   "keywords": [],
   "publishConfig": {
diff --git a/packages/zwave-js/package.json b/packages/zwave-js/package.json
index a2e41a7bbea5..452a09985804 100644
--- a/packages/zwave-js/package.json
+++ b/packages/zwave-js/package.json
@@ -1,6 +1,6 @@
 {
   "name": "zwave-js",
-  "version": "12.8.1",
+  "version": "12.9.0",
   "description": "Z-Wave driver written entirely in JavaScript/TypeScript",
   "keywords": [],
   "main": "build/index.js",