diff --git a/CMakeLists.txt b/CMakeLists.txt
index c15a39f..fea5bef 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-CMAKE_MINIMUM_REQUIRED(VERSION 3.10)
+CMAKE_MINIMUM_REQUIRED(VERSION 4.0)
 
 project(kcp LANGUAGES C)