diff --git a/headers/custom_headers/CustomIAgoraRtcEngine.h b/headers/custom_headers/CustomIAgoraRtcEngine.h
index 39fa9d1..bda2f11 100644
--- a/headers/custom_headers/CustomIAgoraRtcEngine.h
+++ b/headers/custom_headers/CustomIAgoraRtcEngine.h
@@ -331,6 +331,12 @@ class IRtcEngine {
    * @source: virtual int takeSnapshot(uid_t uid, const agora::media::SnapshotConfig& config)  = 0;
    */
   virtual int takeSnapshotWithConfig(uid_t uid, const agora::media::SnapshotConfig& config)  = 0;
+
+  /**
+   * @iris_api_id: RtcEngine_setExternalMediaProjection_f337cbf
+   * @source: virtual int setExternalMediaProjection(void* mediaProjection) = 0;
+   */
+  virtual int setExternalMediaProjection(const void* mediaProjection) = 0;
 };
 
 } // namespace ext