diff --git a/app/build.gradle b/app/build.gradle
index 3db96c3..70046da 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -45,5 +45,5 @@ dependencies {
     testCompile 'junit:junit:4.12'
     compile 'com.android.support:appcompat-v7:25.2.0'
     compile 'com.android.support:support-v4:25.2.0'
-    compile 'com.github.axet:android-audio-library:0.0.7' // compile project(':android-audio-library')
+    compile 'com.github.axet:android-audio-library:0.0.8' // compile project(':android-audio-library')
 }
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 6ce0794..e75cf81 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -29,6 +29,7 @@
         android:layout_height="wrap_content"
         android:layout_gravity="bottom|center_horizontal"
         android:layout_margin="@dimen/fab_margin"
+        android:background="?attr/colorAccent"
         android:src="@drawable/ic_mic_24dp" />
 
 </android.support.design.widget.CoordinatorLayout>
diff --git a/build.gradle b/build.gradle
index f1a984e..b96966a 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.2.3'
+        classpath 'com.android.tools.build:gradle:2.3.0'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files