diff --git a/build.gradle b/build.gradle
index 355f58b..5b58551 100644
--- a/build.gradle
+++ b/build.gradle
@@ -18,6 +18,9 @@ buildscript {
 
         // mutation testing with pitest
         classpath 'info.solidsoft.gradle.pitest:gradle-pitest-plugin:1.4.0'
+
+        // needed for android-library https://jitpack.io/docs/ANDROID/
+        classpath 'com.github.dcendents:android-maven-gradle-plugin:2.1'
     }
 }
 
diff --git a/libK3b/build.gradle b/libK3b/build.gradle
index be41d66..4cfbfb0 100644
--- a/libK3b/build.gradle
+++ b/libK3b/build.gradle
@@ -5,7 +5,7 @@ apply plugin: 'java'
 apply plugin: 'maven'
 
 group = "com.github.k3b"
-version = "L2.1.21.1"
+version = "L2.1.21.2"
 // ---------------
 
 dependencies {
diff --git a/libK3bAndroidZip/build.gradle b/libK3bAndroidZip/build.gradle
index 5809df8..0dd3411 100644
--- a/libK3bAndroidZip/build.gradle
+++ b/libK3bAndroidZip/build.gradle
@@ -1,7 +1,8 @@
 apply plugin: 'com.android.library'
+apply plugin: 'com.github.dcendents.android-maven'
 
 group = "com.github.k3b"
-version = "L2.1.21.1"
+version = "L2.1.21.2"
 
 android {
     compileSdkVersion 23
@@ -11,7 +12,7 @@ android {
         minSdkVersion 7
         targetSdkVersion 23
         versionCode 21
-        versionName "L2.1.21.1"
+        versionName "L2.1.21.2"
     }
 
     buildTypes {
diff --git a/libK3bAndroidZip/libK3bAndroidZip.iml b/libK3bAndroidZip/libK3bAndroidZip.iml
index eeb5ebc..9ba37c4 100644
--- a/libK3bAndroidZip/libK3bAndroidZip.iml
+++ b/libK3bAndroidZip/libK3bAndroidZip.iml
@@ -94,6 +94,7 @@
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/javac" />
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/jniLibs" />
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/library_assets" />
+      <excludeFolder url="file://$MODULE_DIR$/build/intermediates/lint_jar" />
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/merged_manifests" />
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/packaged_res" />
       <excludeFolder url="file://$MODULE_DIR$/build/intermediates/public_res" />
diff --git a/libK3bZip/build.gradle b/libK3bZip/build.gradle
index 24da56d..ca0accd 100644
--- a/libK3bZip/build.gradle
+++ b/libK3bZip/build.gradle
@@ -7,7 +7,7 @@ apply plugin: 'info.solidsoft.pitest'
 apply plugin: 'maven' 
 
 group = "com.github.k3b"
-version = "L2.1.21.1"
+version = "L2.1.21.2"
 // ---------------
 
 sourceCompatibility = 1.7