diff --git a/calendar-server/cinnamon-calendar-server.py b/calendar-server/cinnamon-calendar-server.py
index 9145f6e207..931b4459c6 100755
--- a/calendar-server/cinnamon-calendar-server.py
+++ b/calendar-server/cinnamon-calendar-server.py
@@ -13,7 +13,14 @@
 import gi
 gi.require_version('EDataServer', '1.2')
 gi.require_version('ECal', '2.0')
-gi.require_version('ICal', '3.0')
+for ical_version in ('3.0', '4.0'):
+    try:
+        gi.require_version('ICal', ical_version)
+        break
+    except ValueError:
+        continue
+else:
+    gi.require_version('ICal', '3.0')
 gi.require_version('Cinnamon', '0.1')
 from gi.repository import GLib, Gio, GObject
 from gi.repository import EDataServer, ECal, ICal, ICalGLib