diff --git a/CMakeLists.txt b/CMakeLists.txt
index f291435b..0a19ff4c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3,7 +3,7 @@ cmake_minimum_required(VERSION 3.10.2 FATAL_ERROR)
 #============================================================================
 # Initialize the project
 #============================================================================
-project(ignition-msgs6 VERSION 6.3.0)
+project(ignition-msgs6 VERSION 6.4.0)
 
 #============================================================================
 # Find ignition-cmake
diff --git a/Changelog.md b/Changelog.md
index c3595889..1c362478 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -2,6 +2,14 @@
 
 ### Ignition Msgs 6.x.x (2021-xx-xx)
 
+### Ignition Msgs 6.3.0 (2021-03-01)
+
+1. Support 'has' functionality in particle Emitter.
+    * [Pull request 137](https://github.com/ignitionrobotics/ign-msgs/pull/137)
+
+1. Add ignition version of nav_msgs/OccupancyGrid.
+    * [Pull request 138](https://github.com/ignitionrobotics/ign-msgs/pull/138)
+
 ### Ignition Msgs 6.3.0 (2021-02-17)
 
 1. Particle emitter message.