diff --git a/CHANGELOG.md b/CHANGELOG.md
index 49e98e86..7c185749 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,8 @@
 ArduinoJson: change log
 =======================
 
-HEAD
-----
+v5.6.4
+------
 
 * Fixed error in float serialization (issue #324)
 
diff --git a/appveyor.yml b/appveyor.yml
index fe3a2b9b..32ded9e8 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,4 +1,4 @@
-version: 5.6.3.{build}
+version: 5.6.4.{build}
 environment:
   matrix:
   - CMAKE_GENERATOR: Visual Studio 14 2015
diff --git a/library.json b/library.json
index 3d6f1bbc..a1c6023a 100644
--- a/library.json
+++ b/library.json
@@ -6,7 +6,7 @@
     "type": "git",
     "url": "https://github.com/bblanchon/ArduinoJson.git"
   },
-  "version": "5.6.3",
+  "version": "5.6.4",
   "authors": {
     "name": "Benoit Blanchon",
     "url": "http://blog.benoitblanchon.fr"
diff --git a/library.properties b/library.properties
index f570ff51..fc78644f 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=ArduinoJson
-version=5.6.3
+version=5.6.4
 author=Benoit Blanchon <blog.benoitblanchon.fr>
 maintainer=Benoit Blanchon <blog.benoitblanchon.fr>
 sentence=An efficient and elegant JSON library for Arduino.