1 files changed, 1 insertions, 1 deletions
diff --git a/tzfile.h b/tzfile.h
index b15414665443..f8c6c8c55022 100644
--- a/tzfile.h
+++ b/tzfile.h
@@ -26,7 +26,7 @@
 #endif /* !defined TZDEFRULES */
 
 
-/* See Internet RFC 8536 for more details about the following format.  */
+/* See Internet RFC 9636 for more details about the following format.  */
 
 /*
 ** Each file begins with. . .