diff --git a/CHANGELOG.md b/CHANGELOG.md
index a1891a2d..f089c6b2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased] -
+## [6.6.0] - 2024-05-29
 
 ### Added
 - Serialization/de-serialization (only) support for the KHR_materials_variants extension.
diff --git a/Runtime/Scripts/Export/Constants.cs b/Runtime/Scripts/Export/Constants.cs
index d88046a1..dea1832e 100644
--- a/Runtime/Scripts/Export/Constants.cs
+++ b/Runtime/Scripts/Export/Constants.cs
@@ -7,7 +7,7 @@ namespace GLTFast.Export
 {
     static class Constants
     {
-        public const string version = "6.5.0";
+        public const string version = "6.6.0";
 
         internal const string mimeTypePNG = "image/png";
         internal const string mimeTypeJPG = "image/jpeg";
diff --git a/package.json b/package.json
index bd23de41..b622ae79 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "com.unity.cloud.gltfast",
-  "version": "6.5.0",
+  "version": "6.6.0",
   "displayName": "Unity glTFast",
   "description": "Use glTFast to import and export glTF 3D files efficiently at runtime or in the Editor",
   "unity": "2020.3",