diff --git a/ext/CMakeLists.txt b/ext/CMakeLists.txt
index 35c0cd5d..46dcef9b 100644
--- a/ext/CMakeLists.txt
+++ b/ext/CMakeLists.txt
@@ -2,4 +2,4 @@ cmake_minimum_required (VERSION 2.8)
 
 message ("-- Configuring extensions")
 
-install (FILES totals.py DESTINATION ${TIMEW_DOCDIR}/ext)
+install (FILES on-modify.timewarrior totals.py DESTINATION ${TIMEW_DOCDIR}/ext)