diff --git a/CMakeLists.txt b/CMakeLists.txt
index ee563f3..4006f21 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_tox_upnp)
diff --git a/external/CMakeLists.txt b/external/CMakeLists.txt
index 0abb368..710c6c8 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)
 
diff --git a/plugins/CMakeLists.txt b/plugins/CMakeLists.txt
index 48afd2a..178a9a2 100644
--- a/plugins/CMakeLists.txt
+++ b/plugins/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.9...3.24 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.18...3.24 FATAL_ERROR)
 
 ########################################
 
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index f4535b0..693f6d2 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.9...3.24 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.18...3.24 FATAL_ERROR)
 
 project(solanaceae)