diff --git a/Changelog.txt b/Changelog.txt
index a75341b..a2c90dd 100644
--- a/Changelog.txt
+++ b/Changelog.txt
@@ -1,3 +1,6 @@
+* 2017-10-17
+	- Updated paper ``Anonymizing Censorship Resistant Systems''
+
 * 2017-10-13
 	- Added an onion site for CensorBib.
 
diff --git a/header.tpl b/header.tpl
index 73539c7..30ebd2e 100644
--- a/header.tpl
+++ b/header.tpl
@@ -83,7 +83,7 @@
       (<a href="author_reverse.html">reverse</a>) <a href="author.html">author</a> <br />
       Feedback: <a href="mailto:phw@nymity.ch">phw@nymity.ch</a> (<a
       href="https://nymity.ch/openpgp_public_key.txt">OpenPGP</a>) <br />
-      Last updated: <a href="Changelog.txt">2017-10-13</a> <br />
+      Last updated: <a href="Changelog.txt">2017-10-17</a> <br />
       Onion site: <a href="http://3wcwjjnuvjyazeza.onion">3wcwjjnuvjyazeza.onion</a>
     </div>
   </div>
diff --git a/references.bib b/references.bib
index 6f03a1f..3e5feac 100644
--- a/references.bib
+++ b/references.bib
@@ -1277,7 +1277,7 @@
 	title = {Anonymizing Censorship Resistant Systems},
 	year = {2002},
 	pages = {111--120},
-	url = {http://www.iptps.org/papers-2002/120.pdf},
+	url = {https://censorbib.nymity.ch/pdf/Serjantov2002a.pdf},
 }
 
 @inproceedings{Sfakianakis2011a,