diff --git a/Doc/library/asyncio-eventloop.rst b/Doc/library/asyncio-eventloop.rst
index d59cf05..b9a8b89 100644
--- a/Doc/library/asyncio-eventloop.rst
+++ b/Doc/library/asyncio-eventloop.rst
@@ -281,9 +281,9 @@
    the event loop's internal monotonic clock.
 
 .. note::
-
-   Timeouts (relative *delay* or absolute *when*) should not
-   exceed one day.
+   .. versionchanged:: 3.8
+      In Python 3.7 and earlier timeouts (relative *delay* or absolute *when*)
+      should not exceed one day.  This has been fixed in Python 3.8.
 
 .. seealso::