diff --git a/README.md b/README.md
index 3630f0c7..64b7ad94 100644
--- a/README.md
+++ b/README.md
@@ -1692,7 +1692,11 @@ Factory methods are defined as static methods in the static class `Observable`.
 | **NextFrame**(`CancellationToken` cancellationToken = default) | `Observable<Unit>` | 
 | **NextFrame**(`FrameProvider` frameProvider, `CancellationToken` cancellationToken = default) | `Observable<Unit>` | 
 | **ObservePropertyChanged**(this `T` value, `Func<T, TProperty>` propertySelector, `Boolean` pushCurrentValueOnSubscribe = true, `CancellationToken` cancellationToken = default, `String` expr = default) | `Observable<TProperty>` | 
+| **ObservePropertyChanged**(this `T` value, `Func<T, TProperty1>` propertySelector1, `Func<TProperty1, TProperty2>` propertySelector2, `Boolean` pushCurrentValueOnSubscribe = true, `CancellationToken` cancellationToken = default, `String` propertySelector1Expr = default, `String` propertySelector2Expr = default) | `Observable<TProperty2>` | 
+| **ObservePropertyChanged**(this `T` value, `Func<T, TProperty1>` propertySelector1, `Func<TProperty1, TProperty2>` propertySelector2, `Func<TProperty2, TProperty3>` propertySelector3, `Boolean` pushCurrentValueOnSubscribe = true, `CancellationToken` cancellationToken = default, `String` propertySelector1Expr = default, `String` propertySelector2Expr = default, `String` propertySelector3Expr = default) | `Observable<TProperty3>` | 
 | **ObservePropertyChanging**(this `T` value, `Func<T, TProperty>` propertySelector, `Boolean` pushCurrentValueOnSubscribe = true, `CancellationToken` cancellationToken = default, `String` expr = default) | `Observable<TProperty>` | 
+| **ObservePropertyChanging**(this `T` value, `Func<T, TProperty1>` propertySelector1, `Func<TProperty1, TProperty2>` propertySelector2, `Boolean` pushCurrentValueOnSubscribe = true, `CancellationToken` cancellationToken = default, `String` propertySelector1Expr = default, `String` propertySelector2Expr = default) | `Observable<TProperty2>` | 
+| **ObservePropertyChanging**(this `T` value, `Func<T, TProperty1>` propertySelector1, `Func<TProperty1, TProperty2>` propertySelector2, `Func<TProperty2, TProperty3>` propertySelector3, `Boolean` pushCurrentValueOnSubscribe = true, `CancellationToken` cancellationToken = default, `String` propertySelector1Expr = default, `String` propertySelector2Expr = default, `String` propertySelector3Expr = default) | `Observable<TProperty3>` | 
 | **Range**(`Int32` start, `Int32` count) | `Observable<Int32>` | 
 | **Range**(`Int32` start, `Int32` count, `CancellationToken` cancellationToken) | `Observable<Int32>` | 
 | **Repeat**(`T` value, `Int32` count) | `Observable<T>` | 
diff --git a/docs/reference_factory.md b/docs/reference_factory.md
index ced92df5..41e8c5a0 100644
--- a/docs/reference_factory.md
+++ b/docs/reference_factory.md
@@ -44,7 +44,11 @@
 | **NextFrame**(`CancellationToken` cancellationToken = default) | `Observable<Unit>` | 
 | **NextFrame**(`FrameProvider` frameProvider, `CancellationToken` cancellationToken = default) | `Observable<Unit>` | 
 | **ObservePropertyChanged**(this `T` value, `Func<T, TProperty>` propertySelector, `Boolean` pushCurrentValueOnSubscribe = true, `CancellationToken` cancellationToken = default, `String` expr = default) | `Observable<TProperty>` | 
+| **ObservePropertyChanged**(this `T` value, `Func<T, TProperty1>` propertySelector1, `Func<TProperty1, TProperty2>` propertySelector2, `Boolean` pushCurrentValueOnSubscribe = true, `CancellationToken` cancellationToken = default, `String` propertySelector1Expr = default, `String` propertySelector2Expr = default) | `Observable<TProperty2>` | 
+| **ObservePropertyChanged**(this `T` value, `Func<T, TProperty1>` propertySelector1, `Func<TProperty1, TProperty2>` propertySelector2, `Func<TProperty2, TProperty3>` propertySelector3, `Boolean` pushCurrentValueOnSubscribe = true, `CancellationToken` cancellationToken = default, `String` propertySelector1Expr = default, `String` propertySelector2Expr = default, `String` propertySelector3Expr = default) | `Observable<TProperty3>` | 
 | **ObservePropertyChanging**(this `T` value, `Func<T, TProperty>` propertySelector, `Boolean` pushCurrentValueOnSubscribe = true, `CancellationToken` cancellationToken = default, `String` expr = default) | `Observable<TProperty>` | 
+| **ObservePropertyChanging**(this `T` value, `Func<T, TProperty1>` propertySelector1, `Func<TProperty1, TProperty2>` propertySelector2, `Boolean` pushCurrentValueOnSubscribe = true, `CancellationToken` cancellationToken = default, `String` propertySelector1Expr = default, `String` propertySelector2Expr = default) | `Observable<TProperty2>` | 
+| **ObservePropertyChanging**(this `T` value, `Func<T, TProperty1>` propertySelector1, `Func<TProperty1, TProperty2>` propertySelector2, `Func<TProperty2, TProperty3>` propertySelector3, `Boolean` pushCurrentValueOnSubscribe = true, `CancellationToken` cancellationToken = default, `String` propertySelector1Expr = default, `String` propertySelector2Expr = default, `String` propertySelector3Expr = default) | `Observable<TProperty3>` | 
 | **Range**(`Int32` start, `Int32` count) | `Observable<Int32>` | 
 | **Range**(`Int32` start, `Int32` count, `CancellationToken` cancellationToken) | `Observable<Int32>` | 
 | **Repeat**(`T` value, `Int32` count) | `Observable<T>` | 
diff --git a/src/R3.Godot/addons/R3.Godot/plugin.cfg b/src/R3.Godot/addons/R3.Godot/plugin.cfg
index c19a63d1..084b1ebc 100644
--- a/src/R3.Godot/addons/R3.Godot/plugin.cfg
+++ b/src/R3.Godot/addons/R3.Godot/plugin.cfg
@@ -3,6 +3,6 @@
 name="R3.Godot"
 description="The new future of dotnet/reactive and UniRx."
 author="Cysharp"
-version="1.1.5"
+version="1.1.6"
 language="C-sharp"
 script="GodotR3Plugin.cs"
diff --git a/src/R3.Unity/Assets/R3.Unity/package.json b/src/R3.Unity/Assets/R3.Unity/package.json
index 783eeb43..2d69e29f 100644
--- a/src/R3.Unity/Assets/R3.Unity/package.json
+++ b/src/R3.Unity/Assets/R3.Unity/package.json
@@ -2,7 +2,7 @@
     "name": "com.cysharp.r3",
     "displayName": "R3",
     "author": { "name": "Cysharp, Inc.", "url": "https://cysharp.co.jp/en/" },
-    "version": "1.1.5",
+    "version": "1.1.6",
     "unity": "2021.3",
     "description": "Reactive Extensions for Unity.",
     "keywords": [ "rx", "event", "Scripting" ],