1 files changed, 5 insertions, 1 deletions

diff --git a/src/lib/libcrypto/man/PKCS7_add_attribute.3 b/src/lib/libcrypto/man/PKCS7_add_attribute.3
index 5b284b7b57..e7c8c734c4 100644
--- a/src/lib/libcrypto/man/PKCS7_add_attribute.3
+++ b/src/lib/libcrypto/man/PKCS7_add_attribute.3
@@ -1,4 +1,4 @@
-.\" $OpenBSD: PKCS7_add_attribute.3,v 1.5 2025/07/27 07:13:24 tb Exp $
+.\" $OpenBSD: PKCS7_add_attribute.3,v 1.6 2025/07/27 19:31:20 schwarze Exp $
 .\"
 .\" Copyright (c) 2020 Ingo Schwarze <schwarze@openbsd.org>
 .\"
@@ -307,6 +307,10 @@ RFC 2985: PKCS #9: Selected Object Classes and Attribute Types Version 2.0,
 section 5.3: Attribute types for use in PKCS #7 data
 and section 5.6: Attributes defined in S/MIME
 .Pp
+RFC 5652: Cryptographic Message Syntax (CMS),
+section 5.3: SignerInfo Type
+and section 11: Useful Attributes
+.Pp
 RFC 8551: Secure/Multipurpose Internet Mail Extensions (S/MIME)
 Version 4.0 Message Specification,
 section 2.5.2: SMIMECapabilities Attribute