diff --git a/Doc/library/asyncio-stream.rst b/Doc/library/asyncio-stream.rst
index bf431cfb8a410a..a960b26c8d8006 100644
--- a/Doc/library/asyncio-stream.rst
+++ b/Doc/library/asyncio-stream.rst
@@ -51,7 +51,8 @@ and work with streams:
 .. coroutinefunction:: open_connection(host=None, port=None, *, \
                           loop=None, limit=None, ssl=None, family=0, \
                           proto=0, flags=0, sock=None, local_addr=None, \
-                          server_hostname=None, ssl_handshake_timeout=None)
+                          server_hostname=None, ssl_handshake_timeout=None, \
+                          happy_eyeballs_delay=None, interleave=None)
 
    Establish a network connection and return a pair of
    ``(reader, writer)`` objects.
@@ -73,6 +74,10 @@ and work with streams:
 
       The *ssl_handshake_timeout* parameter.
 
+   .. versionadded:: 3.8
+
+      Added *happy_eyeballs_delay* and *interleave* parameters.
+
 .. coroutinefunction:: start_server(client_connected_cb, host=None, \
                           port=None, *, loop=None, limit=None, \
                           family=socket.AF_UNSPEC, \