diff --git a/unstable/linux-dmabuf/linux-dmabuf-unstable-v1.xml b/unstable/linux-dmabuf/linux-dmabuf-unstable-v1.xml
index 6b71ed0ba9683a1ecbbeef712bada0b73b4764f3..a2ae58e94e8605c08a9de3a111bbdede92dcfddf 100644
--- a/unstable/linux-dmabuf/linux-dmabuf-unstable-v1.xml
+++ b/unstable/linux-dmabuf/linux-dmabuf-unstable-v1.xml
@@ -247,6 +247,19 @@
       <arg name="reserveints" type="array" summary="bufferhandle reserveints"/>
     </request>
 
+    <request name="add_buffer_handle_fd">
+      <description summary="set bufferhandle fd">
+      </description>
+      <arg name="type" type="int" summary="type"/>
+      <arg name="offset" type="int" summary="offset"/>
+      <arg name="fd" type="fd" summary="fd"/>
+    </request>
+
+    <enum name="buffer_handle_fd_type">
+      <entry name="main" value="1"/>
+      <entry name="reserve" value="2"/>
+    </enum>
+
     <enum name="flags">
       <entry name="y_invert" value="1" summary="contents are y-inverted"/>
       <entry name="interlaced" value="2" summary="content is interlaced"/>