diff --git a/README.rst b/README.rst
index 22d54810..53c0ce4a 100644
--- a/README.rst
+++ b/README.rst
@@ -14,9 +14,11 @@ An HPACK encoder and decoder are available as a public API.
 Development Status
 ------------------
 
-We have implemented `RFC 7540 <https://tools.ietf.org/html/rfc7540>`_
-HTTP/2 and `RFC 7541 <https://tools.ietf.org/html/rfc7541>`_ HPACK -
-Header Compression for HTTP/2
+nghttp2 was originally developed based on `RFC 7540
+<https://tools.ietf.org/html/rfc7540>`_ HTTP/2 and `RFC 7541
+<https://tools.ietf.org/html/rfc7541>`_ HPACK - Header Compression for
+HTTP/2.  Now we are updating our code to implement `RFC 9113
+<https://datatracker.ietf.org/doc/html/rfc9113>`_.
 
 The nghttp2 code base was forked from the spdylay
 (https://github.com/tatsuhiro-t/spdylay) project.