allow keyfile argument to be None (closes #22787)
diff --git a/Misc/NEWS b/Misc/NEWS
index 57c752c..e49239c 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -37,6 +37,9 @@
 Library
 -------
 
+- Issue #22787: Allow the keyfile argument of SSLContext.load_cert_chain to be
+  None.
+
 - Issue #22775: Fixed unpickling of Cookie.SimpleCookie with protocol 2.
   Patch by Tim Graham.