diff --git a/samples/android/15-puzzle/AndroidManifest.xml b/samples/android/15-puzzle/AndroidManifest.xml
index 356382bf14..c783076a84 100644
--- a/samples/android/15-puzzle/AndroidManifest.xml
+++ b/samples/android/15-puzzle/AndroidManifest.xml
@@ -1,7 +1,8 @@
+<?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="301"
+    android:versionName="3.01" >
 
     <uses-sdk android:minSdkVersion="8"/>
 
@@ -31,4 +32,4 @@
     <uses-feature android:name="android.hardware.camera.front" android:required="false"/>
     <uses-feature android:name="android.hardware.camera.front.autofocus" android:required="false"/>
 
-</manifest>
\ No newline at end of file
+</manifest>
diff --git a/samples/android/camera-calibration/AndroidManifest.xml b/samples/android/camera-calibration/AndroidManifest.xml
index 619c919eec..7c03ba0bee 100644
--- a/samples/android/camera-calibration/AndroidManifest.xml
+++ b/samples/android/camera-calibration/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.samples.cameracalibration"
-          android:versionCode="1"
-          android:versionName="1.0">
+          android:versionCode="301"
+          android:versionName="3.01" >
 
     <application
         android:label="@string/app_name"
diff --git a/samples/android/color-blob-detection/AndroidManifest.xml b/samples/android/color-blob-detection/AndroidManifest.xml
index d322ba27d3..ac16bb9931 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.samples.colorblobdetect"
-          android:versionCode="21"
-          android:versionName="2.1">
+          android:versionCode="301"
+          android:versionName="3.01">
 
     <application
         android:label="@string/app_name"
diff --git a/samples/android/face-detection/AndroidManifest.xml b/samples/android/face-detection/AndroidManifest.xml
index bcbb34de3d..bdd1c6df63 100644
--- a/samples/android/face-detection/AndroidManifest.xml
+++ b/samples/android/face-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.samples.facedetect"
-          android:versionCode="21"
-          android:versionName="2.1">
+          android:versionCode="301"
+          android:versionName="3.01">
 
     <application
         android:label="@string/app_name"
diff --git a/samples/android/image-manipulations/AndroidManifest.xml b/samples/android/image-manipulations/AndroidManifest.xml
index 50ef788ac6..ff78f09035 100644
--- a/samples/android/image-manipulations/AndroidManifest.xml
+++ b/samples/android/image-manipulations/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.samples.imagemanipulations"
-          android:versionCode="21"
-          android:versionName="2.1">
+          android:versionCode="301"
+          android:versionName="3.01">
 
     <application
         android:label="@string/app_name"
diff --git a/samples/android/tutorial-1-camerapreview/AndroidManifest.xml b/samples/android/tutorial-1-camerapreview/AndroidManifest.xml
index 47d45ed374..d9ecac8462 100644
--- a/samples/android/tutorial-1-camerapreview/AndroidManifest.xml
+++ b/samples/android/tutorial-1-camerapreview/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.samples.tutorial1"
-          android:versionCode="21"
-          android:versionName="2.1">
+          android:versionCode="301"
+          android:versionName="3.01">
 
     <application
         android:label="@string/app_name"
diff --git a/samples/android/tutorial-2-mixedprocessing/AndroidManifest.xml b/samples/android/tutorial-2-mixedprocessing/AndroidManifest.xml
index 795dd204b0..ce6beab401 100644
--- a/samples/android/tutorial-2-mixedprocessing/AndroidManifest.xml
+++ b/samples/android/tutorial-2-mixedprocessing/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.samples.tutorial2"
-          android:versionCode="21"
-          android:versionName="2.1">
+          android:versionCode="301"
+          android:versionName="3.01">
 
     <application
         android:label="@string/app_name"
diff --git a/samples/android/tutorial-3-cameracontrol/AndroidManifest.xml b/samples/android/tutorial-3-cameracontrol/AndroidManifest.xml
index da90f95d86..e2854585d1 100644
--- a/samples/android/tutorial-3-cameracontrol/AndroidManifest.xml
+++ b/samples/android/tutorial-3-cameracontrol/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.samples.tutorial3"
-          android:versionCode="21"
-          android:versionName="2.1">
+          android:versionCode="301"
+          android:versionName="3.01">
 
     <application
         android:label="@string/app_name"