diff --git a/xep.ent b/xep.ent
index 65a7e824..21794d0a 100644
--- a/xep.ent
+++ b/xep.ent
@@ -221,7 +221,7 @@
AES Advanced Encryption Standard: Federal Information Processing Standards Publication 197 <http://csrc.nist.gov/publications/fips/fips197/fips-197.pdf>." >
HMAC The Keyed-Hash Message Authentication Code (HMAC): Federal Information Processing Standards Publication 198 <http://csrc.nist.gov/publications/fips/fips198/fips-198a.pdf>." >
Recommendation for Block Cipher Modes of Operation Recommendation for Block Cipher Modes of Operation: Federal Information Processing Standards Publication 800-38a <http://csrc.nist.gov/publications/ nistpubs/800-38a/sp800-38a.pdf>." >
-Off-the-Record Communication Off-the-Record Communication, or, Why Not to Use PGP <http://www.isaac.cs.berkeley.edu/~iang/pubs/otr-wpes.pdf>." >
+Off-the-Record Communication Off-the-Record Communication, or, Why Not to Use PGP <http://www.cypherpunks.ca/otr/otr-codecon.pdf> <http://www.cypherpunks.ca/otr/otr-wpes.pdf>." >
Serpent The Serpent Block Cipher <http://www.cl.cam.ac.uk/~rja14/serpent.html>." >
SIGMA SIGMA: the 'SIGn-and-MAc' Approach to Authenticated Diffie-Hellman and its Use in the IKE Protocols (Hugo Krawczyk, June 12 2003) <http://www.ee.technion.ac.il/~hugo/sigma.ps>." >
SSL SSL V3.0 <http://wp.netscape.com/eng/ssl3/draft302.txt>." >