diff --git a/CHANGELOG.md b/CHANGELOG.md
index b51fd416a..cf4503b0e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Changelog
 
+## 1.43.0 - 11 July 2019
+
+* Updated binaries for Device OS 1.2.1
+* Removed Ascender mechanism for updating bootloaders and replaced with shiny new 🌟 feature implemented in [Device OS PR 1788](https://github.com/particle-iot/device-os/pull/1788) that allows us to flash the bootloader via DFU with special sequence.
+
 ## 1.42.0 - 28 June 2019
 
 * Updates bootloader on Photon and P1 to Device OS v1.1.1's latest version (v301), even though (v201) is only required. [#496](https://github.com/particle-iot/particle-cli/pull/496)
diff --git a/npm-shrinkwrap.json b/npm-shrinkwrap.json
index 02ba49ceb..090e29811 100644
--- a/npm-shrinkwrap.json
+++ b/npm-shrinkwrap.json
@@ -1,6 +1,6 @@
 {
   "name": "particle-cli",
-  "version": "1.42.0",
+  "version": "1.43.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 980f604dc..593c0ba83 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "particle-cli",
   "description": "Simple Node commandline application for working with your Particle devices and using the Particle Cloud",
-  "version": "1.42.0",
+  "version": "1.43.0",
   "author": "David Middlecamp",
   "bin": {
     "particle": "./dist/index.js"