diff --git a/docs/uml/libsp_functions.puml b/docs/uml/libsp_functions.puml
index 538d573..4a4a16c 100644
--- a/docs/uml/libsp_functions.puml
+++ b/docs/uml/libsp_functions.puml
@@ -43,6 +43,12 @@
     + ffa_mem_relinquish()
     + ffa_mem_reclaim()
 
+    .. Notification interfaces ..
+    + ffa_notification_bind()
+    + ffa_notification_unbind()
+    + ffa_notification_set()
+    + ffa_notification_get()
+
     .. Interrupt handler definition ..
     + ffa_interrupt_handler()
   }