diff --git a/Assets/UIEffect/Readme.md b/Assets/UIEffect/Readme.md
index f90df1f0..24366ac4 100644
--- a/Assets/UIEffect/Readme.md
+++ b/Assets/UIEffect/Readme.md
@@ -135,6 +135,11 @@ Please enable `TexCoord1` to use UIEffect.
 <br><br><br><br>
 ## Release Notes
 
+### ver.1.6.1
+
+* Fixed: Cannot access protected member `UnityEngine.UI.BaseMeshEffect.graphic` in Unity5.6+.
+
+
 ### ver.1.6.0
 
 * Changed: UIEffect inherit BaseMeshEffect.
diff --git a/Readme.md b/Readme.md
index f90df1f0..24366ac4 100644
--- a/Readme.md
+++ b/Readme.md
@@ -135,6 +135,11 @@ Please enable `TexCoord1` to use UIEffect.
 <br><br><br><br>
 ## Release Notes
 
+### ver.1.6.1
+
+* Fixed: Cannot access protected member `UnityEngine.UI.BaseMeshEffect.graphic` in Unity5.6+.
+
+
 ### ver.1.6.0
 
 * Changed: UIEffect inherit BaseMeshEffect.
diff --git a/UIEffect.unitypackage b/UIEffect.unitypackage
index 6519d564..7389fa27 100644
Binary files a/UIEffect.unitypackage and b/UIEffect.unitypackage differ