diff --git a/pycon_project/apps/symposion/schedule/views.py b/pycon_project/apps/symposion/schedule/views.py
index 55c13802..004f8c54 100644
--- a/pycon_project/apps/symposion/schedule/views.py
+++ b/pycon_project/apps/symposion/schedule/views.py
@@ -499,7 +499,7 @@ def schedule_user_bookmarks(request, user_id, user_hash):
             event["uid"] = str(p.pk) + "-2012.us.pycon.org"
             cal.add_component(event)
     
-    response = HttpResponse(cal.as_string(), content_type="text/calendar")
+    response = HttpResponse(cal.to_ical(), content_type="text/calendar")
     response["Content-Disposition"] = "filename=pycon2012-%s-bookmarks.ics" % user.username.encode("utf-8")
     return response
 
diff --git a/pycon_project/requirements/project.txt b/pycon_project/requirements/project.txt
index d0da895f..33b06dc9 100644
--- a/pycon_project/requirements/project.txt
+++ b/pycon_project/requirements/project.txt
@@ -28,7 +28,7 @@ django-fixture-generator==0.2.0
 nashvegas==0.6.3
 redis==2.2.4
 sorl-thumbnail==11.05.2
-icalendar==2.2
+icalendar==3.0.1b2
 PIL==1.1.7
 psycopg2==2.4.4
 gondor==1.0.1