diff --git a/ext/mri/blf.h b/ext/mri/blf.h
index cd65d7e..54f5178 100644
--- a/ext/mri/blf.h
+++ b/ext/mri/blf.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: blf.h,v 1.7 2007/03/14 17:59:41 grunk Exp $ */
+/* $OpenBSD: blf.h,v 1.8 2021/11/29 01:04:45 djm Exp $ */
 /*
  * Blowfish - a fast block cipher designed by Bruce Schneier
  *
@@ -13,10 +13,7 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *      This product includes software developed by Niels Provos.
- * 4. The name of the author may not be used to endorse or promote products
+ * 3. The name of the author may not be used to endorse or promote products
  *    derived from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
diff --git a/ext/mri/blowfish.c b/ext/mri/blowfish.c
index 5d2137d..a243d80 100644
--- a/ext/mri/blowfish.c
+++ b/ext/mri/blowfish.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: blowfish.c,v 1.19 2015/09/11 09:18:27 guenther Exp $ */
+/* $OpenBSD: blowfish.c,v 1.20 2021/11/29 01:04:45 djm Exp $ */
 /*
  * Blowfish block cipher for OpenBSD
  * Copyright 1997 Niels Provos <provos@physnet.uni-hamburg.de>
@@ -14,10 +14,7 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *      This product includes software developed by Niels Provos.
- * 4. The name of the author may not be used to endorse or promote products
+ * 3. The name of the author may not be used to endorse or promote products
  *    derived from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
@@ -695,4 +692,4 @@ main(void)
 	blf_dec(&c, data2, 1);
 	report(data2, 2);
 }
-#endif
\ No newline at end of file
+#endif