diff --git a/CHANGELOG.md b/CHANGELOG.md
index aebebbc0b..1e8ed28b3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,8 @@
 ArduinoJson: change log
 =======================
 
-HEAD
-----
+v6.12.0 (2019-09-05)
+-------
 
 * Use absolute instead of relative includes (issue #1072)
 * Changed `JsonVariant::as<bool>()` to return `true` for any non-null value (issue #1005)
diff --git a/README.md b/README.md
index a449e7661..2578c9ad1 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 ---
 
-[![arduino-library-badge](https://www.ardu-badge.com/badge/ArduinoJson.svg?version=6.11.5)](https://www.ardu-badge.com/ArduinoJson/6.11.5)
+[![arduino-library-badge](https://www.ardu-badge.com/badge/ArduinoJson.svg?version=6.12.0)](https://www.ardu-badge.com/ArduinoJson/6.12.0)
 [![Build Status](https://ci.appveyor.com/api/projects/status/m7s53wav1l0abssg/branch/6.x?svg=true)](https://ci.appveyor.com/project/bblanchon/arduinojson/branch/6.x)
 [![Build Status](https://travis-ci.org/bblanchon/ArduinoJson.svg?branch=6.x)](https://travis-ci.org/bblanchon/ArduinoJson)
 [![Coverage Status](https://coveralls.io/repos/github/bblanchon/ArduinoJson/badge.svg?branch=6.x)](https://coveralls.io/github/bblanchon/ArduinoJson?branch=6.x)
diff --git a/appveyor.yml b/appveyor.yml
index 4bcd4725f..29fa98e63 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,4 +1,4 @@
-version: 6.11.5.{build}
+version: 6.12.0.{build}
 environment:
   matrix:
   - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
diff --git a/library.json b/library.json
index 4c44967dc..484cd226e 100644
--- a/library.json
+++ b/library.json
@@ -7,7 +7,7 @@
     "type": "git",
     "url": "https://github.com/bblanchon/ArduinoJson.git"
   },
-  "version": "6.11.5",
+  "version": "6.12.0",
   "authors": {
     "name": "Benoit Blanchon",
     "url": "https://blog.benoitblanchon.fr"
diff --git a/library.properties b/library.properties
index fcb2a1cff..79b53b922 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=ArduinoJson
-version=6.11.5
+version=6.12.0
 author=Benoit Blanchon <blog.benoitblanchon.fr>
 maintainer=Benoit Blanchon <blog.benoitblanchon.fr>
 sentence=An efficient and elegant JSON library for Arduino.
diff --git a/src/ArduinoJson/version.hpp b/src/ArduinoJson/version.hpp
index 60ea778f0..68e679c67 100644
--- a/src/ArduinoJson/version.hpp
+++ b/src/ArduinoJson/version.hpp
@@ -4,7 +4,7 @@
 
 #pragma once
 
-#define ARDUINOJSON_VERSION "6.11.5"
+#define ARDUINOJSON_VERSION "6.12.0"
 #define ARDUINOJSON_VERSION_MAJOR 6
-#define ARDUINOJSON_VERSION_MINOR 11
-#define ARDUINOJSON_VERSION_REVISION 5
+#define ARDUINOJSON_VERSION_MINOR 12
+#define ARDUINOJSON_VERSION_REVISION 0