diff --git a/samples/android/15-puzzle/AndroidManifest.xml b/samples/android/15-puzzle/AndroidManifest.xml
index dec508ee7..02a6cc975 100644
--- a/samples/android/15-puzzle/AndroidManifest.xml
+++ b/samples/android/15-puzzle/AndroidManifest.xml
@@ -1,15 +1,15 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
       package="org.opencv.samples.puzzle15"
-      android:versionCode="1"
-      android:versionName="1.0">
+      android:versionCode="21"
+      android:versionName="2.1">
 
     <supports-screens android:resizeable="true"
-                      android:smallScreens="true" 
-                      android:normalScreens="true" 
-                      android:largeScreens="true" 
+                      android:smallScreens="true"
+                      android:normalScreens="true"
+                      android:largeScreens="true"
                       android:anyDensity="true" />
-    
+
     <application android:icon="@drawable/icon" android:label="@string/app_name">
         <activity android:name=".puzzle15Activity"
                   android:label="@string/app_name"
@@ -21,7 +21,7 @@
             </intent-filter>
         </activity>
     </application>
-    
+
     <uses-sdk android:minSdkVersion="8" />
 
     <uses-permission android:name="android.permission.CAMERA"/>
diff --git a/samples/android/color-blob-detection/AndroidManifest.xml b/samples/android/color-blob-detection/AndroidManifest.xml
index 83791f06a..a580be645 100644
--- a/samples/android/color-blob-detection/AndroidManifest.xml
+++ b/samples/android/color-blob-detection/AndroidManifest.xml
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="org.opencv.example.colorblobdetect"
-    android:versionCode="1"
-    android:versionName="1.0" >
+    android:versionCode="21"
+    android:versionName="2.1" >
 
     <uses-sdk android:minSdkVersion="8" />
 
@@ -23,5 +23,5 @@
     <uses-permission android:name="android.permission.CAMERA"/>
     <uses-feature android:name="android.hardware.camera" />
     <uses-feature android:name="android.hardware.camera.autofocus" />
-    
+
 </manifest>
\ No newline at end of file
diff --git a/samples/android/face-detection/AndroidManifest.xml b/samples/android/face-detection/AndroidManifest.xml
index 34ede0562..285bcb9fa 100644
--- a/samples/android/face-detection/AndroidManifest.xml
+++ b/samples/android/face-detection/AndroidManifest.xml
@@ -1,13 +1,13 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
       package="org.opencv.samples.fd"
-      android:versionCode="1"
-      android:versionName="1.0">
+      android:versionCode="21"
+      android:versionName="2.1">
 
     <supports-screens android:resizeable="true"
-                      android:smallScreens="true" 
-                      android:normalScreens="true" 
-                      android:largeScreens="true" 
+                      android:smallScreens="true"
+                      android:normalScreens="true"
+                      android:largeScreens="true"
                       android:anyDensity="true" />
 
     <application android:label="@string/app_name" android:icon="@drawable/icon">
@@ -21,11 +21,11 @@
             </intent-filter>
         </activity>
     </application>
-    
+
     <uses-sdk android:minSdkVersion="8" />
 
     <uses-permission android:name="android.permission.CAMERA"/>
     <uses-feature android:name="android.hardware.camera" />
     <uses-feature android:name="android.hardware.camera.autofocus" />
 
-</manifest> 
+</manifest>
diff --git a/samples/android/image-manipulations/AndroidManifest.xml b/samples/android/image-manipulations/AndroidManifest.xml
index ab3200318..72df75e44 100644
--- a/samples/android/image-manipulations/AndroidManifest.xml
+++ b/samples/android/image-manipulations/AndroidManifest.xml
@@ -1,13 +1,13 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
       package="org.opencv.samples.imagemanipulations"
-      android:versionCode="1"
-      android:versionName="1.0">
+      android:versionCode="21"
+      android:versionName="2.1">
 
     <supports-screens android:resizeable="true"
-                      android:smallScreens="true" 
-                      android:normalScreens="true" 
-                      android:largeScreens="true" 
+                      android:smallScreens="true"
+                      android:normalScreens="true"
+                      android:largeScreens="true"
                       android:anyDensity="true" />
 
     <application android:label="@string/app_name" android:icon="@drawable/icon">
@@ -21,11 +21,11 @@
             </intent-filter>
         </activity>
     </application>
-    
+
     <uses-sdk android:minSdkVersion="8" />
 
     <uses-permission android:name="android.permission.CAMERA"/>
     <uses-feature android:name="android.hardware.camera" />
     <uses-feature android:name="android.hardware.camera.autofocus" />
 
-</manifest> 
+</manifest>
diff --git a/samples/android/tutorial-0-androidcamera/AndroidManifest.xml b/samples/android/tutorial-0-androidcamera/AndroidManifest.xml
index 51aa236ed..714b0095a 100644
--- a/samples/android/tutorial-0-androidcamera/AndroidManifest.xml
+++ b/samples/android/tutorial-0-androidcamera/AndroidManifest.xml
@@ -1,21 +1,21 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
       package="org.opencv.samples.tutorial0"
-      android:versionCode="1"
-      android:versionName="1.0">
+      android:versionCode="21"
+      android:versionName="2.1">
 
     <supports-screens android:resizeable="true"
-                      android:smallScreens="true" 
-                      android:normalScreens="true" 
-                      android:largeScreens="true" 
+                      android:smallScreens="true"
+                      android:normalScreens="true"
+                      android:largeScreens="true"
                       android:anyDensity="true" />
 
     <uses-sdk android:minSdkVersion="8"/>
-    
+
     <uses-permission android:name="android.permission.CAMERA"/>
     <uses-feature android:name="android.hardware.camera" />
     <uses-feature android:name="android.hardware.camera.autofocus" />
-    
+
     <application android:label="@string/app_name" android:icon="@drawable/icon">
         <activity android:name="Sample0Base"
                   android:label="@string/app_name"
@@ -27,6 +27,6 @@
             </intent-filter>
         </activity>
     </application>
-    
 
-</manifest> 
+
+</manifest>
diff --git a/samples/android/tutorial-1-addopencv/AndroidManifest.xml b/samples/android/tutorial-1-addopencv/AndroidManifest.xml
index 438f09624..51cc50f7f 100644
--- a/samples/android/tutorial-1-addopencv/AndroidManifest.xml
+++ b/samples/android/tutorial-1-addopencv/AndroidManifest.xml
@@ -1,13 +1,13 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
       package="org.opencv.samples.tutorial1"
-      android:versionCode="1"
-      android:versionName="1.0">
+      android:versionCode="21"
+      android:versionName="2.1">
 
     <supports-screens android:resizeable="true"
-                      android:smallScreens="true" 
-                      android:normalScreens="true" 
-                      android:largeScreens="true" 
+                      android:smallScreens="true"
+                      android:normalScreens="true"
+                      android:largeScreens="true"
                       android:anyDensity="true" />
 
     <application android:label="@string/app_name" android:icon="@drawable/icon">
@@ -21,11 +21,11 @@
             </intent-filter>
         </activity>
     </application>
-    
+
     <uses-sdk android:minSdkVersion="8" />
 
     <uses-permission android:name="android.permission.CAMERA"/>
     <uses-feature android:name="android.hardware.camera" />
     <uses-feature android:name="android.hardware.camera.autofocus" />
 
-</manifest> 
+</manifest>
diff --git a/samples/android/tutorial-2-opencvcamera/AndroidManifest.xml b/samples/android/tutorial-2-opencvcamera/AndroidManifest.xml
index accc3b2cf..7daacd164 100644
--- a/samples/android/tutorial-2-opencvcamera/AndroidManifest.xml
+++ b/samples/android/tutorial-2-opencvcamera/AndroidManifest.xml
@@ -1,13 +1,13 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
       package="org.opencv.samples.tutorial2"
-      android:versionCode="1"
-      android:versionName="1.0">
+      android:versionCode="21"
+      android:versionName="2.1">
 
     <supports-screens android:resizeable="true"
-                      android:smallScreens="true" 
-                      android:normalScreens="true" 
-                      android:largeScreens="true" 
+                      android:smallScreens="true"
+                      android:normalScreens="true"
+                      android:largeScreens="true"
                       android:anyDensity="true" />
 
     <application android:label="@string/app_name" android:icon="@drawable/icon">
@@ -21,11 +21,11 @@
             </intent-filter>
         </activity>
     </application>
-    
+
     <uses-sdk android:minSdkVersion="8" />
 
     <uses-permission android:name="android.permission.CAMERA"/>
     <uses-feature android:name="android.hardware.camera" />
     <uses-feature android:name="android.hardware.camera.autofocus" />
 
-</manifest> 
+</manifest>
diff --git a/samples/android/tutorial-3-native/AndroidManifest.xml b/samples/android/tutorial-3-native/AndroidManifest.xml
index 145048e7f..8ee38142b 100644
--- a/samples/android/tutorial-3-native/AndroidManifest.xml
+++ b/samples/android/tutorial-3-native/AndroidManifest.xml
@@ -1,13 +1,13 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
       package="org.opencv.samples.tutorial3"
-      android:versionCode="1"
-      android:versionName="1.0">
+      android:versionCode="21"
+      android:versionName="2.1">
 
     <supports-screens android:resizeable="true"
-                      android:smallScreens="true" 
-                      android:normalScreens="true" 
-                      android:largeScreens="true" 
+                      android:smallScreens="true"
+                      android:normalScreens="true"
+                      android:largeScreens="true"
                       android:anyDensity="true" />
 
     <application android:label="@string/app_name" android:icon="@drawable/icon">
@@ -21,11 +21,11 @@
             </intent-filter>
         </activity>
     </application>
-    
+
     <uses-sdk android:minSdkVersion="8" />
 
     <uses-permission android:name="android.permission.CAMERA"/>
     <uses-feature android:name="android.hardware.camera" />
     <uses-feature android:name="android.hardware.camera.autofocus" />
 
-</manifest> 
+</manifest>
diff --git a/samples/android/tutorial-4-mixed/AndroidManifest.xml b/samples/android/tutorial-4-mixed/AndroidManifest.xml
index 3201f7c04..524c76399 100644
--- a/samples/android/tutorial-4-mixed/AndroidManifest.xml
+++ b/samples/android/tutorial-4-mixed/AndroidManifest.xml
@@ -1,13 +1,13 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
       package="org.opencv.samples.tutorial4"
-      android:versionCode="1"
-      android:versionName="1.0">
+      android:versionCode="21"
+      android:versionName="2.1">
 
     <supports-screens android:resizeable="true"
-                      android:smallScreens="true" 
-                      android:normalScreens="true" 
-                      android:largeScreens="true" 
+                      android:smallScreens="true"
+                      android:normalScreens="true"
+                      android:largeScreens="true"
                       android:anyDensity="true" />
 
     <application android:label="@string/app_name" android:icon="@drawable/icon">
@@ -21,11 +21,11 @@
             </intent-filter>
         </activity>
     </application>
-    
+
     <uses-sdk android:minSdkVersion="8" />
 
     <uses-permission android:name="android.permission.CAMERA"/>
     <uses-feature android:name="android.hardware.camera" />
     <uses-feature android:name="android.hardware.camera.autofocus" />
 
-</manifest> 
+</manifest>