diff --git a/documentscanner-demo/src/main/AndroidManifest.xml b/documentscanner-demo/src/main/AndroidManifest.xml
index d59d556..b5aca12 100644
--- a/documentscanner-demo/src/main/AndroidManifest.xml
+++ b/documentscanner-demo/src/main/AndroidManifest.xml
@@ -11,6 +11,7 @@
         android:theme="@style/Theme.Demo">
         <activity
             android:name=".MainActivity"
+            android:configChanges="orientation|screenSize"
             android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
diff --git a/documentscanner/src/main/AndroidManifest.xml b/documentscanner/src/main/AndroidManifest.xml
index f896238..27ca0c6 100644
--- a/documentscanner/src/main/AndroidManifest.xml
+++ b/documentscanner/src/main/AndroidManifest.xml
@@ -12,6 +12,8 @@
     <application>
         <activity
             android:name=".DocumentScannerActivity"
+            android:configChanges="orientation|screenSize"
+            android:screenOrientation="portrait"
             android:theme="@style/Theme.FullScreen" />
 
         <provider