diff --git a/libs/binder/ndk/include_ndk/android/binder_parcel.h b/libs/binder/ndk/include_ndk/android/binder_parcel.h
index a2f5c93..8457581 100644
--- a/libs/binder/ndk/include_ndk/android/binder_parcel.h
+++ b/libs/binder/ndk/include_ndk/android/binder_parcel.h
@@ -1167,6 +1167,8 @@
 /**
  * Marshals the raw bytes of the Parcel to a buffer.
  *
+ * Available since API level 33.
+ *
  * The parcel must not contain any binders or file descriptors.
  *
  * The data you retrieve here must not be placed in any kind of persistent storage. (on local disk,
@@ -1189,6 +1191,8 @@
 /**
  * Set the data in the parcel to the raw bytes from the buffer.
  *
+ * Available since API level 33.
+ *
  * \param parcel The parcel to set data.
  * \param buffer The data buffer to set.
  * \param len The size of the data to set.