diff --git a/CMakeLists.txt b/CMakeLists.txt
index 72975ef..321faa6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.18)
 project(psil)
 
 if (SANITIZE STREQUAL "YES")