diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1e77c84..8a39f90 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,7 +5,7 @@ else()
  cmake_minimum_required(VERSION 3.9)
 endif()
 
-set (CMAKE_CXX_STANDARD 17)
+set (CMAKE_CXX_STANDARD 20)
 
 project(freeaoe)