diff --git a/audio/aidl/device_framework_matrix_product.xml b/audio/aidl/device_framework_matrix_product.xml
index 0e7e998..11f01c7 100644
--- a/audio/aidl/device_framework_matrix_product.xml
+++ b/audio/aidl/device_framework_matrix_product.xml
@@ -9,7 +9,7 @@
     </hal>
     <hal format="aidl">
         <name>vendor.google.whitechapel.audio.extension</name>
-        <version>3</version>
+        <version>4</version>
         <interface>
             <name>IAudioExtension</name>
             <instance>default</instance>