diff --git a/library/src/main/res/drawable/afs_md2_thumb.xml b/library/src/main/res/drawable/afs_md2_thumb.xml
index 5a5978c..b7b9dd1 100644
--- a/library/src/main/res/drawable/afs_md2_thumb.xml
+++ b/library/src/main/res/drawable/afs_md2_thumb.xml
@@ -22,8 +22,9 @@
   -->
 <shape
     xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto" 
     android:shape="rectangle"
-    android:tint="?colorControlActivated">
+    app:tint="?colorControlActivated">
 
     <corners android:radius="8dp" />
 
diff --git a/library/src/main/res/drawable/afs_md2_track.xml b/library/src/main/res/drawable/afs_md2_track.xml
index bed0855..29353d3 100644
--- a/library/src/main/res/drawable/afs_md2_track.xml
+++ b/library/src/main/res/drawable/afs_md2_track.xml
@@ -22,8 +22,9 @@
   -->
 <shape
     xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto" 
     android:shape="rectangle"
-    android:tint="?colorControlNormal">
+    app:tint="?colorControlNormal">
 
     <corners android:radius="8dp" />
 
diff --git a/library/src/main/res/drawable/afs_popup_background.xml b/library/src/main/res/drawable/afs_popup_background.xml
index 8a0d3ea..e83bdaa 100644
--- a/library/src/main/res/drawable/afs_popup_background.xml
+++ b/library/src/main/res/drawable/afs_popup_background.xml
@@ -22,8 +22,9 @@
   -->
 <shape
     xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto" 
     android:shape="rectangle"
-    android:tint="?colorControlActivated">
+    app:tint="?colorControlActivated">
 
     <corners
         android:topLeftRadius="44dp"
diff --git a/library/src/main/res/drawable/afs_thumb.xml b/library/src/main/res/drawable/afs_thumb.xml
index 3067618..9ac7ee8 100644
--- a/library/src/main/res/drawable/afs_thumb.xml
+++ b/library/src/main/res/drawable/afs_thumb.xml
@@ -22,8 +22,9 @@
   -->
 <shape
     xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto" 
     android:shape="rectangle"
-    android:tint="?colorControlActivated">
+    app:tint="?colorControlActivated">
 
     <size android:width="8dp" android:height="48dp" />
 
diff --git a/library/src/main/res/drawable/afs_thumb_stateful.xml b/library/src/main/res/drawable/afs_thumb_stateful.xml
index 9194ad0..ca93fa7 100644
--- a/library/src/main/res/drawable/afs_thumb_stateful.xml
+++ b/library/src/main/res/drawable/afs_thumb_stateful.xml
@@ -23,13 +23,14 @@
   -->
 <selector
     xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto" 
     xmlns:tools="http://schemas.android.com/tools"
     tools:ignore="UnusedResources">
 
     <item android:state_pressed="true">
         <shape
             android:shape="rectangle"
-            android:tint="?colorControlActivated">
+            app:tint="?colorControlActivated">
             <size android:width="8dp" android:height="48dp" />
             <solid android:color="@android:color/white" />
         </shape>
@@ -38,7 +39,7 @@
     <item>
         <shape
             android:shape="rectangle"
-            android:tint="?colorControlNormal">
+            app:tint="?colorControlNormal">
             <size android:width="8dp" android:height="48dp" />
             <solid android:color="@android:color/white" />
         </shape>
diff --git a/library/src/main/res/drawable/afs_track.xml b/library/src/main/res/drawable/afs_track.xml
index 464cd71..e598e0a 100644
--- a/library/src/main/res/drawable/afs_track.xml
+++ b/library/src/main/res/drawable/afs_track.xml
@@ -22,8 +22,9 @@
   -->
 <shape
     xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto" 
     android:shape="rectangle"
-    android:tint="?colorControlNormal">
+    app:tint="?colorControlNormal">
 
     <size android:width="8dp" />