diff --git a/builder/frameworks/arduino.py b/builder/frameworks/arduino.py
index b90a6bb..c3359d8 100644
--- a/builder/frameworks/arduino.py
+++ b/builder/frameworks/arduino.py
@@ -35,6 +35,7 @@
 assert isdir(FRAMEWORK_DIR)
 
 BUILTIN_USB_FLAGS = (
+    "USB_AUDIO",
     "USB_HID",
     "USB_SERIAL_HID",
     "USB_DISK",
diff --git a/platform.json b/platform.json
index 7a98e1f..e4cc89b 100644
--- a/platform.json
+++ b/platform.json
@@ -13,7 +13,7 @@
     "type": "git",
     "url": "https://github.com/platformio/platform-teensy.git"
   },
-  "version": "1.2.0",
+  "version": "1.2.1",
   "packageRepositories": [
     "https://dl.bintray.com/platformio/dl-packages/manifest.json",
     "https://sourceforge.net/projects/platformio-storage/files/packages/manifest.json/download",