diff --git a/CMakeLists.txt b/CMakeLists.txt
index db6b628..75537d0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.27)
+cmake_minimum_required(VERSION 3.18)
 project(Event
     VERSION 1.0
     LANGUAGES CXX