diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index e248145d9..6a13ae927 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -2,7 +2,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="eu.siacs.conversations"
     android:versionCode="1"
-    android:versionName="1.0" >
+    android:versionName="0.1-rc1" >
 
     <uses-sdk
         android:minSdkVersion="14"
@@ -89,4 +89,4 @@
         </activity>
     </application>
 
-</manifest>
\ No newline at end of file
+</manifest>
diff --git a/custom_rules.xml b/custom_rules.xml
new file mode 100644
index 000000000..f7b0378a6
--- /dev/null
+++ b/custom_rules.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project>
+
+    <target name="rename-release-with-version-number" >
+
+        <xmlproperty
+            collapseAttributes="true"
+            file="AndroidManifest.xml"
+            prefix="themanifest" />
+
+        <property
+            name="out.packaged.file"
+            location="${out.absolute.dir}/${ant.project.name}-${themanifest.manifest.android:versionName}-unsigned.apk" />
+
+        <property
+            name="out.final.file"
+            location="${out.absolute.dir}/${ant.project.name}-${themanifest.manifest.android:versionName}.apk" />
+    </target>
+
+    <target
+        name="-set-release-mode"
+        depends="rename-release-with-version-number,android_rules.-set-release-mode" >
+
+        <echo message="target: ${build.target}" >
+        </echo>
+    </target>
+
+</project>
\ No newline at end of file