diff --git a/content/events.xml b/content/events.xml
index 7af08be18..88f16f435 100644
--- a/content/events.xml
+++ b/content/events.xml
@@ -124,4 +124,10 @@
     <location>Berlin, Kalkscheune</location>
     <link>http://re-publica.de/</link>
   </event>
+  <event title="CoSin">
+    <start>2007-07-06</start>
+    <end>2007-07-08</end>
+    <location>KuZeB, Bremgarten AG</location>
+    <link>https://wiki.chaostreff.ch/index.php/Chaos_Singularity_2007</link>
+  </event>
 </calendar>