diff --git a/COPYRIGHT b/COPYRIGHT
index 0477bb450..d2115c59b 100644
--- a/COPYRIGHT
+++ b/COPYRIGHT
@@ -119,6 +119,12 @@ Copyright (C) 2010-2018 Paul Rivier and John MacFarlane
 
 Released under the GNU General Public License version 2 or later.
 
+----------------------------------------------------------------------
+src/Text/Pandoc/Readers/TikiWiki.hs
+Copyright (C) 2017 Robin Lee Powell
+
+Released under the GNU General Public License version 2.
+
 ----------------------------------------------------------------------
 src/Text/Pandoc/Readers/JATS.hs
 Copyright (C) 2017-2018 Hamish Mackenzie