diff --git a/COPYING.SLIBTOOL b/COPYING.SLIBTOOL
index 9915ecc..131c254 100644
--- a/COPYING.SLIBTOOL
+++ b/COPYING.SLIBTOOL
@@ -2,7 +2,7 @@
 /*                                                                           */
 /*  slibtool: a strong libtool implementation, written in C                  */
 /*                                                                           */
-/*  Copyright (C) 2016--2021  SysDeer Technologies, LLC                      */
+/*  Copyright (C) 2016--2024  SysDeer Technologies, LLC                      */
 /*                                                                           */
 /*  Permission is hereby granted, free of charge, to any person obtaining    */
 /*  a copy of this software and associated documentation files (the          */
diff --git a/m4/slibtool.m4 b/m4/slibtool.m4
index 4baab5c..bcaea40 100644
--- a/m4/slibtool.m4
+++ b/m4/slibtool.m4
@@ -2,7 +2,7 @@
 #                                                                             #
 #   slibtool.m4: native slibtool integration for autoconf-based projects      #
 #                                                                             #
-#   Copyright (C) 2021  SysDeer Technologies, LLC                             #
+#   Copyright (C) 2016--2024  SysDeer Technologies, LLC                       #
 #                                                                             #
 #   Permission is hereby granted, free of charge, to any person obtaining     #
 #   a copy of this software and associated documentation files (the           #