diff --git a/Windows.Clang.toolchain.cmake b/Windows.Clang.toolchain.cmake
index 9828983..bba0a68 100644
--- a/Windows.Clang.toolchain.cmake
+++ b/Windows.Clang.toolchain.cmake
@@ -58,7 +58,9 @@
 # Resources:
 #   <https://cmake.org/cmake/help/latest/manual/cmake-toolchains.7.html>
 #
-cmake_minimum_required(VERSION 3.20)
+if(CMAKE_VERSION VERSION_LESS 3.20)
+    message(FATAL_ERROR "WindowsToolchain requires at least CMake 3.20, but CMake ${CMAKE_VERSION} is in use.")
+endif()
 
 include_guard()
 
diff --git a/Windows.EWDK.toolchain.cmake b/Windows.EWDK.toolchain.cmake
index 9de8790..866d223 100644
--- a/Windows.EWDK.toolchain.cmake
+++ b/Windows.EWDK.toolchain.cmake
@@ -67,7 +67,9 @@
 # Resources:
 #   <https://cmake.org/cmake/help/latest/manual/cmake-toolchains.7.html>
 #
-cmake_minimum_required(VERSION 3.20)
+if(CMAKE_VERSION VERSION_LESS 3.20)
+    message(FATAL_ERROR "WindowsToolchain requires at least CMake 3.20, but CMake ${CMAKE_VERSION} is in use.")
+endif()
 
 include_guard()
 
diff --git a/Windows.MSVC.toolchain.cmake b/Windows.MSVC.toolchain.cmake
index d464b28..a8c8975 100644
--- a/Windows.MSVC.toolchain.cmake
+++ b/Windows.MSVC.toolchain.cmake
@@ -67,7 +67,9 @@
 # Resources:
 #   <https://cmake.org/cmake/help/latest/manual/cmake-toolchains.7.html>
 #
-cmake_minimum_required(VERSION 3.20)
+if(CMAKE_VERSION VERSION_LESS 3.20)
+    message(FATAL_ERROR "WindowsToolchain requires at least CMake 3.20, but CMake ${CMAKE_VERSION} is in use.")
+endif()
 
 include_guard()
 
diff --git a/example/CMakeLists.txt b/example/CMakeLists.txt
index 8d54afe..a37fd14 100644
--- a/example/CMakeLists.txt
+++ b/example/CMakeLists.txt
@@ -1,7 +1,7 @@
 #----------------------------------------------------------------------------------------------------------------------
 #
 #----------------------------------------------------------------------------------------------------------------------
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.31)
 
 if(DEFINED ENV{CUDA_PATH})
     set(CMAKE_CUDA_COMPILER "$ENV{CUDA_PATH}/bin/nvcc.exe")