diff --git a/CMakeLists.txt b/CMakeLists.txt
index 344c7d4..9e373cb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,7 @@
 cmake_minimum_required( VERSION 3.1.0 )
 
+cmake_policy( VERSION 3.12 )
+
 project( date VERSION 2.4.1 )
 
 include( GNUInstallDirs )