diff --git a/Assets/UniGLTF/Runtime/UniGLTF/UniGLTFVersion.cs b/Assets/UniGLTF/Runtime/UniGLTF/UniGLTFVersion.cs
index f46c865cf..3059fab25 100644
--- a/Assets/UniGLTF/Runtime/UniGLTF/UniGLTFVersion.cs
+++ b/Assets/UniGLTF/Runtime/UniGLTF/UniGLTFVersion.cs
@@ -4,8 +4,8 @@ namespace UniGLTF
     public static partial class UniGLTFVersion
     {
         public const int MAJOR = 2;
-        public const int MINOR = 27;
-        public const int PATCH = 1;
-        public const string VERSION = "2.27.1";
+        public const int MINOR = 28;
+        public const int PATCH = 0;
+        public const string VERSION = "2.28.0";
     }
 }
diff --git a/Assets/UniGLTF/package.json b/Assets/UniGLTF/package.json
index bee1cdbe6..8371419c5 100644
--- a/Assets/UniGLTF/package.json
+++ b/Assets/UniGLTF/package.json
@@ -1,6 +1,6 @@
 {
   "name": "com.vrmc.gltf",
-  "version": "0.91.1",
+  "version": "0.92.0",
   "displayName": "UniGLTF",
   "description": "GLTF importer and exporter",
   "unity": "2019.4",
@@ -11,6 +11,6 @@
     "name": "VRM Consortium"
   },
   "dependencies": {
-    "com.vrmc.vrmshaders": "0.91.1"
+    "com.vrmc.vrmshaders": "0.92.0"
   }
 }
\ No newline at end of file
diff --git a/Assets/VRM/Runtime/Format/VRMVersion.cs b/Assets/VRM/Runtime/Format/VRMVersion.cs
index f187fd98b..134ede0ab 100644
--- a/Assets/VRM/Runtime/Format/VRMVersion.cs
+++ b/Assets/VRM/Runtime/Format/VRMVersion.cs
@@ -4,8 +4,8 @@ namespace VRM
     public static partial class VRMVersion
     {
         public const int MAJOR = 0;
-        public const int MINOR = 91;
-        public const int PATCH = 1;
-        public const string VERSION = "0.91.1";
+        public const int MINOR = 92;
+        public const int PATCH = 0;
+        public const string VERSION = "0.92.0";
     }
 }
diff --git a/Assets/VRM/package.json b/Assets/VRM/package.json
index d102f8a76..47ebba658 100644
--- a/Assets/VRM/package.json
+++ b/Assets/VRM/package.json
@@ -1,6 +1,6 @@
 {
   "name": "com.vrmc.univrm",
-  "version": "0.91.1",
+  "version": "0.92.0",
   "displayName": "VRM",
   "description": "VRM importer",
   "unity": "2019.4",
@@ -14,8 +14,8 @@
     "name": "VRM Consortium"
   },
   "dependencies": {
-    "com.vrmc.vrmshaders": "0.91.1",
-    "com.vrmc.gltf": "0.91.1"
+    "com.vrmc.vrmshaders": "0.92.0",
+    "com.vrmc.gltf": "0.92.0"
   },
   "samples": [
     {
diff --git a/Assets/VRM10/package.json b/Assets/VRM10/package.json
index aed97f855..b6d88b20f 100644
--- a/Assets/VRM10/package.json
+++ b/Assets/VRM10/package.json
@@ -1,6 +1,6 @@
 {
   "name": "com.vrmc.vrm",
-  "version": "0.91.1",
+  "version": "0.92.0",
   "displayName": "VRM-1.0β",
   "description": "VRM-1.0β importer",
   "unity": "2019.4",
@@ -14,8 +14,8 @@
     "name": "VRM Consortium"
   },
   "dependencies": {
-    "com.vrmc.vrmshaders": "0.91.1",
-    "com.vrmc.gltf": "0.91.1"
+    "com.vrmc.vrmshaders": "0.92.0",
+    "com.vrmc.gltf": "0.92.0"
   },
   "samples": [
     {
diff --git a/Assets/VRMShaders/package.json b/Assets/VRMShaders/package.json
index d6dfff522..c23f79730 100644
--- a/Assets/VRMShaders/package.json
+++ b/Assets/VRMShaders/package.json
@@ -1,6 +1,6 @@
 {
   "name": "com.vrmc.vrmshaders",
-  "version": "0.91.1",
+  "version": "0.92.0",
   "displayName": "VRM Shaders",
   "description": "VRM Shaders",
   "unity": "2019.4",
diff --git a/docs/how_to_release.md b/docs/how_to_release.md
new file mode 100644
index 000000000..de8b0dba3
--- /dev/null
+++ b/docs/how_to_release.md
@@ -0,0 +1,50 @@
+# リリース作業手順
+
+## リリース番号を決める。
+
+`vX.Y.Z`
+
+## ライブラリのバージョンを上げる
+
+`VRM0-development-Version Dialog` によりバージョンを上げる。
+
+branch: `version/vX_Y_Z`
+commit: `UniVRM-X.Y.Z`
+PR
+merge
+
+## UnitTest をすべて実行する
+
+all green
+
+## Build確認
+
+`VRM0-development-Dummy build for CI` により `#if UNITY_EDITOR` などでビルド時のみに起きるエラーが無いことｗ確認する
+
+## unity package 作成
+
+`VRM0-development-Create Unity Package` により unity package を作成する
+
+* UniVRM
+* UniVRM-Sample
+* VRM
+* VRM-Sample
+
+の４パッケージ
+
+## リポジトリにタグを打つ
+
+`vX.Y.Z`
+
+## github で tag からリリースを作成して draft で保存する。
+
+* unity package をアップロード
+* unity package の動作確認
+* UPM の動作確認
+
+## リリース記事
+
+* `/doc/release_gen.py`
+    * release の記事をコピペ
+    * sphinx の release 記事が生成されるので、必用であれば手を入れてコミット、push(`doc/vX_Y_Z`: `release vX.Y.Z`)、merge
+* github release を draft から publish