diff --git a/metadata/at.bitfire.gfxtablet.txt b/metadata/at.bitfire.gfxtablet.txt
index a975f7f12f..12f7a55d5a 100644
--- a/metadata/at.bitfire.gfxtablet.txt
+++ b/metadata/at.bitfire.gfxtablet.txt
@@ -1,17 +1,18 @@
 Categories:Multimedia
 License:MIT
-Web Site:https://rfc2822.github.com/GfxTablet
+Web Site:https://rfc2822.github.io/GfxTablet/
 Source Code:https://github.com/rfc2822/GfxTablet
 Issue Tracker:https://github.com/rfc2822/GfxTablet/issues
-Donate:https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=ZT8F5NRCBDB2C&no_note=0&no_shipping=1&currency_code=EUR&item_name=GfxTablet+donation
+Donate:https://rfc2822.github.io/GfxTablet/#donate
+Bitcoin:1KSCy7RHztKuhW9fLLaUYqdwdC2iwbejZU
 
 Auto Name:GfxTablet
 Summary:Use touchscreen as graphics tablet
 Description:
-GfxTablet makes it possible to use your device (especially tablets)
-like a graphics tablet, sending touch data (including pressure!) to any
-compatible (e.g. GNU/Linux) computer.
-Requires running the uinput driver on your PC (see Website for details).
+GfxTablet makes it possible to use your device (especially tablets) like a
+graphics tablet, sending touch data (including pressure!) to any compatible
+(e.g. GNU/Linux) computer. Requires running the uinput driver on your PC
+(see website for details).
 .
 
 Repo Type:git
@@ -25,8 +26,13 @@ Build:1.2,3
     commit=android-app-1.2
     subdir=app-android
 
+Build:1.3,4
+    commit=android-app-1.3
+    subdir=app-android/app
+    gradle=yes
+
 Auto Update Mode:Version android-app-%v
 Update Check Mode:Tags
-Current Version:1.2
-Current Version Code:3
+Current Version:1.3
+Current Version Code:4