diff --git a/buildsys.mk.in b/buildsys.mk.in
index a514372..7d5d3a1 100644
--- a/buildsys.mk.in
+++ b/buildsys.mk.in
@@ -1,6 +1,6 @@
 #
 #  Copyright (c) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
-#                2017, 2018, 2020, 2021, 2022
+#                2017, 2018, 2020, 2021, 2022, 2023
 #    Jonathan Schleifer <js@nil.im>
 #
 #  https://fossil.nil.im/buildsys