diff --git a/Example/app/MultipleChartScreen.js b/Example/app/MultipleChartScreen.js
index 7a76be329..3b7c6c0e9 100644
--- a/Example/app/MultipleChartScreen.js
+++ b/Example/app/MultipleChartScreen.js
@@ -74,7 +74,7 @@ class MultipleChartScreen extends React.Component {
             scaleYEnabled={true}
             pinchZoom={true}
             doubleTapToZoomEnabled={true}
-            dragDecelerationEnabled={false}
+            dragDecelerationEnabled={true}
             dragDecelerationFrictionCoef={0.99}
             zoom={this.state.chart1Zoom}
 
diff --git a/package.json b/package.json
index fde48c2d7..4ebb18661 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
     "type": "git",
     "url": "https://github.com/wuxudong/react-native-charts-wrapper.git"
   },
-  "version": "0.4.0-alpha",
+  "version": "0.4.0",
   "description": "A react-native charts support both android and ios.",
   "author": "wuxudong",
   "license": "MIT",