diff --git a/CMakeLists.txt b/CMakeLists.txt
index c0d55af..ea0958b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.24 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.18...3.24 FATAL_ERROR)
 
 # cmake setup begin
 project(solanaceae_contact)
diff --git a/external/CMakeLists.txt b/external/CMakeLists.txt
index d9ce071..bd57adf 100644
--- a/external/CMakeLists.txt
+++ b/external/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.24 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.18...3.24 FATAL_ERROR)
 
 include(FetchContent)