diff --git a/content/events.xml b/content/events.xml
index f7c0e0ff3..e155f9506 100644
--- a/content/events.xml
+++ b/content/events.xml
@@ -898,4 +898,10 @@
     <location>BCC, Berlin</location>
     <link>http://events.ccc.de/congress/2011/</link>
   </event>
+  <event title="SIGINT">
+    <start>2011-05-17</start>
+    <end>2011-05-21</end>
+    <location>Köln</location>
+    <link>http://events.ccc.de/sigint/2011/</link>
+  </event>
 </calendar>