--- man/CMakeLists.txt.orig	2019-11-23 07:44:33 UTC
+++ man/CMakeLists.txt
@@ -1,4 +1,4 @@
-CMAKE_MINIMUM_REQUIRED(VERSION 2.6)
+CMAKE_MINIMUM_REQUIRED(VERSION 3.5)
 
 SET(CMAKE_VERBOSE_MAKEFILE ON)
 
