diff --git a/CHANGELOG.md b/CHANGELOG.md
index 806bbb1..6a3dc18 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 Change Log
 ==========
+Version 1.2.0 *(2015-09-16)*
+----------------------------
+
+add new transformations MaskTransformation and NinePatchMaskTransformation.
+Thank you @start141
 
 Version 1.1.0 *(2015-09-05)*
 ----------------------------
diff --git a/README.md b/README.md
index ab9a9c3..4cc0e76 100644
--- a/README.md
+++ b/README.md
@@ -85,6 +85,9 @@ android {
 ### Blur
 `BlurTransformation`
 
+### Mask
+`MaskTransformation`, `NinePatchMaskTransformation`
+
 ### GPU Filter (use [GPUImage](https://github.com/CyberAgent/android-gpuimage))
 *Will require add dependencies for GPUImage.*