diff --git a/CMakeLists.txt b/CMakeLists.txt
index 47cc7e65..8f0e5ff8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,23 +4,23 @@
 # Distributed under the Boost Software License, Version 1.0.
 # See accompanying file LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt
 
-cmake_minimum_required(VERSION 3.5...4.20)
+cmake_minimum_required(VERSION 3.5...4.4)
+
 project(boost_conversion VERSION "${BOOST_SUPERPROJECT_VERSION}" LANGUAGES CXX)
 
-if (BOOST_USE_MODULES)
-  add_library(boost_conversion)
+if(BOOST_USE_MODULES)
+  add_library(boost_conversion STATIC)
   target_sources(boost_conversion PUBLIC
-    FILE_SET modules_public
-    TYPE CXX_MODULES
-    BASE_DIRS modules
-    FILES ${CMAKE_CURRENT_LIST_DIR}/modules/boost_conversion.cppm
+    FILE_SET CXX_MODULES
+      BASE_DIRS modules
+      FILES modules/boost_conversion.cppm
   )
 
   target_compile_definitions(boost_conversion PUBLIC BOOST_USE_MODULES)
   get_property(__standard TARGET boost_conversion PROPERTY CXX_STANDARD)
-  if (__standard IN_LIST CMAKE_CXX_COMPILER_IMPORT_STD AND CMAKE_CXX_MODULE_STD)
+  if(__standard IN_LIST CMAKE_CXX_COMPILER_IMPORT_STD AND CMAKE_CXX_MODULE_STD)
     target_compile_features(boost_conversion PUBLIC cxx_std_23)
-    target_compile_definitions(boost_conversion PRIVATE BOOST_CONVERSION_USE_STD_MODULE)
+    target_compile_definitions(boost_conversion PUBLIC BOOST_CONVERSION_USE_STD_MODULE)
     message(STATUS "Using `import std;`")
   else()
     target_compile_features(boost_conversion PUBLIC cxx_std_20)