diff --git a/include/android/input.h b/include/android/input.h
index 7b76539..5ab4e29 100644
--- a/include/android/input.h
+++ b/include/android/input.h
@@ -807,6 +807,8 @@
     AINPUT_SOURCE_MOUSE = 0x00002000 | AINPUT_SOURCE_CLASS_POINTER,
     /** stylus */
     AINPUT_SOURCE_STYLUS = 0x00004000 | AINPUT_SOURCE_CLASS_POINTER,
+    /** bluetooth stylus */
+    AINPUT_SOURCE_BLUETOOTH_STYLUS = 0x00008000 | AINPUT_SOURCE_STYLUS,
     /** trackball */
     AINPUT_SOURCE_TRACKBALL = 0x00010000 | AINPUT_SOURCE_CLASS_NAVIGATION,
     /** touchpad */