diff --git a/bin/ps/keyword.c b/bin/ps/keyword.c
index 3c19912144a..f05e5245f69 100644
--- a/bin/ps/keyword.c
+++ b/bin/ps/keyword.c
@@ -3,6 +3,11 @@
  *
  * Copyright (c) 1990, 1993, 1994
  *	The Regents of the University of California.  All rights reserved.
+ * Copyright (c) 2025 The FreeBSD Foundation
+ *
+ * Portions of this software were developed by Olivier Certner
+ * <olce@FreeBSD.org> at Kumacom SARL under sponsorship from the FreeBSD
+ * Foundation.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
diff --git a/bin/ps/ps.c b/bin/ps/ps.c
index a75ea512ad5..bb510272995 100644
--- a/bin/ps/ps.c
+++ b/bin/ps/ps.c
@@ -3,6 +3,11 @@
  *
  * Copyright (c) 1990, 1993, 1994
  *	The Regents of the University of California.  All rights reserved.
+ * Copyright (c) 2025 The FreeBSD Foundation
+ *
+ * Portions of this software were developed by Olivier Certner
+ * <olce@FreeBSD.org> at Kumacom SARL under sponsorship from the FreeBSD
+ * Foundation.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions