diff --git a/peps/pep-9999.rst b/peps/pep-0789.rst
similarity index 99%
rename from peps/pep-9999.rst
rename to peps/pep-0789.rst
index ea2c3756244..0b2a1b77858 100644
--- a/peps/pep-9999.rst
+++ b/peps/pep-0789.rst
@@ -1,4 +1,4 @@
-PEP: 9999
+PEP: 789
 Title: Preventing task-cancellation bugs by limiting yield in async generators
 Author: Zac Hatfield-Dodds <zac@zhd.dev>,
         Nathaniel J. Smith <njs@pobox.com>