diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2ad1a459..6240ce49 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,7 +15,7 @@
 #
 #-------------------------------------------------
 
-cmake_minimum_required(VERSION 3.8...3.20)
+cmake_minimum_required(VERSION 3.16...3.20)
 
 set(BOOST_OPENMETHOD_VERSION 1)
 
diff --git a/test/cmake_test/CMakeLists.txt b/test/cmake_test/CMakeLists.txt
index a8972d18..3a41334b 100644
--- a/test/cmake_test/CMakeLists.txt
+++ b/test/cmake_test/CMakeLists.txt
@@ -5,7 +5,7 @@
 # https://www.boost.org/LICENSE_1_0.txt
 #
 
-cmake_minimum_required(VERSION 3.8...3.20)
+cmake_minimum_required(VERSION 3.16...3.20)
 
 project(cmake_test LANGUAGES CXX)
 set(__ignore__ ${CMAKE_C_COMPILER})