diff --git a/CMakeLists.txt b/CMakeLists.txt
index 525bfcd..b6b3a1a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.16)
+cmake_minimum_required (VERSION 3.21)
 project (glog
   VERSION 0.7.0
   DESCRIPTION "C++ implementation of the Google logging module"