diff --git a/README b/README
index 74f0cabe..7e61e6d7 100644
--- a/README
+++ b/README
@@ -82,4 +82,5 @@ License
 -------
 
 pg_arman can be distributed under the PostgreSQL license. See COPYRIGHT
-file for more information.
+file for more information. pg_arman is a fork of the existing project
+pg_rman, initially created and maintained by NTT and Itagaki Takahiro.