diff --git a/Misc/NEWS b/Misc/NEWS
index debfb0c..b72e78a 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -470,6 +470,8 @@
 Library
 -------
 
+- Issue #9164: Ensure that sysconfig handles duplicate -arch flags in CFLAGS
+
 - Issue #7646: The fnmatch pattern cache no longer grows without bound.
 
 - Issue #9136: Fix 'dictionary changed size during iteration'