diff --git a/pjsip/include/pjsip-simple/presence.h b/pjsip/include/pjsip-simple/presence.h
index eaf8ba8..d80736d 100644
--- a/pjsip/include/pjsip-simple/presence.h
+++ b/pjsip/include/pjsip-simple/presence.h
@@ -181,6 +181,18 @@
 					  pjsip_tx_data **p_tdata);
 
 
+/**
+ * Add a list of headers to the subscription instance. The list of headers
+ * will be added to outgoing presence subscription requests.
+ *
+ * @param sub		Subscription instance.
+ * @param hdr_list	List of headers to be added.
+ *
+ * @return		PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pjsip_pres_add_header( pjsip_evsub *sub,
+					    const pjsip_hdr *hdr_list );
+
 
 /**
  * Accept the incoming subscription request by sending 2xx response to