--- a/rfcs.roff	Thu Jul 12 00:56:47 2012 +0200
+++ b/rfcs.roff	Thu Jul 12 01:07:44 2012 +0200
@@ -23,6 +23,10 @@
 .I "Standard for the Format of ARPA Internet Text Messages",
 August 1982.
 
+.IP RFC\|1864
+.I "The Content-MD5 Header Field",
+October 1995.
+
 .IP RFC\|2045
 .I "Multipurpose Internet Mail Extensions (MIME) Part One:\
 	Format of Internet Message Bodies" ,
@@ -47,3 +51,15 @@
 	Conformance Criteria and Examples" ,
 November 1996.
 
+.IP RFC\|2822
+.I "Internet Message Format",
+April 2001.
+
+.IP RFC\|3156
+.I "MIME Security with OpenPGP",
+August 2001.
+
+.IP RFC\|4880
+.I "OpenPGP Message Format",
+November 2007.
+