diff --git a/attribouter/build.gradle b/attribouter/build.gradle
index cd6e176..b197d09 100644
--- a/attribouter/build.gradle
+++ b/attribouter/build.gradle
@@ -1,5 +1,11 @@
 apply plugin: 'com.android.library'
 
+ext {
+    PUBLISH_GROUP_ID = 'me.jfenn'
+    PUBLISH_ARTIFACT_ID = 'attribouter'
+    PUBLISH_VERSION = '0.0.1'
+}
+
 android {
     compileSdkVersion 27
 
@@ -7,7 +13,7 @@ android {
         minSdkVersion 15
         targetSdkVersion 27
         versionCode 1
-        versionName "1.0"
+        versionName "0.0.1"
 
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
         vectorDrawables.useSupportLibrary = true
@@ -34,3 +40,5 @@ dependencies {
     implementation 'com.github.bumptech.glide:glide:4.6.1'
     annotationProcessor 'com.github.bumptech.glide:compiler:4.6.1'
 }
+
+apply from: 'https://raw.githubusercontent.com/blundell/release-android-library/master/android-release-aar.gradle'
diff --git a/attribouter/src/main/java/me/jfenn/attribouter/utils/ImageUtils.java b/attribouter/src/main/java/me/jfenn/attribouter/utils/ImageUtils.java
index b64574a..1bfbcff 100644
--- a/attribouter/src/main/java/me/jfenn/attribouter/utils/ImageUtils.java
+++ b/attribouter/src/main/java/me/jfenn/attribouter/utils/ImageUtils.java
@@ -7,6 +7,7 @@
 import android.graphics.drawable.ColorDrawable;
 import android.graphics.drawable.Drawable;
 import android.graphics.drawable.VectorDrawable;
+import android.os.Build;
 import android.support.graphics.drawable.VectorDrawableCompat;
 
 public class ImageUtils {
@@ -14,7 +15,7 @@ public class ImageUtils {
     public static Bitmap drawableToBitmap(Drawable drawable) {
         if (drawable == null) drawable = new ColorDrawable(Color.TRANSPARENT);
         if (drawable instanceof BitmapDrawable) return ((BitmapDrawable) drawable).getBitmap();
-        if (drawable instanceof VectorDrawableCompat || drawable instanceof VectorDrawable) {
+        if (drawable instanceof VectorDrawableCompat || (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP && drawable instanceof VectorDrawable)) {
             Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
             Canvas canvas = new Canvas(bitmap);
             drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());