diff --git a/ndn/experiments/prefix_propogation.py b/ndn/experiments/prefix_propogation.py
index 4fe7dee..a4f83b3 100644
--- a/ndn/experiments/prefix_propogation.py
+++ b/ndn/experiments/prefix_propogation.py
@@ -1,6 +1,6 @@
 # -*- Mode:python; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
 #
-# Copyright (C) 2015-2017, The University of Memphis,
+# Copyright (C) 2015-2018, The University of Memphis,
 #                          Arizona Board of Regents,
 #                          Regents of the University of California.
 #