diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6a48c13..0f883dd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-CMAKE_MINIMUM_REQUIRED (VERSION 2.6)
+CMAKE_MINIMUM_REQUIRED (VERSION 3.5)
 
 PROJECT (xcalib C)