diff --git a/CMakeLists.txt b/CMakeLists.txt
index 46a5bdc..8103566 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,7 +5,7 @@
 #
 # SPDX-License-Identifier: CC0-1.0
 
-cmake_minimum_required (VERSION 3.5)
+cmake_minimum_required (VERSION 3.15)
 project(bitdht)
 
 set(