diff --git a/app-android/app/build.gradle b/app-android/app/build.gradle
index 6cc8923..190f87b 100644
--- a/app-android/app/build.gradle
+++ b/app-android/app/build.gradle
@@ -1,8 +1,8 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 22
-    buildToolsVersion "22.0.1"
+    compileSdkVersion 23
+    buildToolsVersion "23.0.2"
 
     defaultConfig {
         applicationId "at.bitfire.gfxtablet"
diff --git a/app-android/app/src/main/AndroidManifest.xml b/app-android/app/src/main/AndroidManifest.xml
index eaa6569..225ca27 100644
--- a/app-android/app/src/main/AndroidManifest.xml
+++ b/app-android/app/src/main/AndroidManifest.xml
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="at.bitfire.gfxtablet"
-    android:versionCode="4"
-    android:versionName="1.3" >
+    android:versionCode="5"
+    android:versionName="1.4" >
 
     <uses-sdk />
 
diff --git a/app-android/app/src/main/java/at/bitfire/gfxtablet/CanvasActivity.java b/app-android/app/src/main/java/at/bitfire/gfxtablet/CanvasActivity.java
index 8500cb8..e961564 100644
--- a/app-android/app/src/main/java/at/bitfire/gfxtablet/CanvasActivity.java
+++ b/app-android/app/src/main/java/at/bitfire/gfxtablet/CanvasActivity.java
@@ -26,7 +26,7 @@ public class CanvasActivity extends AppCompatActivity implements View.OnSystemUi
     private static final int RESULT_LOAD_IMAGE = 1;
     private static final String TAG = "GfxTablet.Canvas";
 
-    final Uri homepageUri = Uri.parse(("https://rfc2822.github.io/GfxTablet/"));
+    final Uri homepageUri = Uri.parse(("https://gfxtablet.bitfire.at"));
 
     NetworkClient netClient;
 
@@ -90,7 +90,7 @@ public class CanvasActivity extends AppCompatActivity implements View.OnSystemUi
     }
 
     public void showDonate(MenuItem item) {
-        startActivity(new Intent(Intent.ACTION_VIEW, homepageUri.buildUpon().fragment("donate").build()));
+        startActivity(new Intent(Intent.ACTION_VIEW, homepageUri.buildUpon().appendPath("donate").build()));
     }
 
     public void showSettings(MenuItem item) {