diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4e72289..33dd58a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,7 +4,7 @@
 # For the licensing terms see $ROOTSYS/LICENSE.
 # For the list of contributors see $ROOTSYS/README/CREDITS.
 
-cmake_minimum_required(VERSION 3.1)
+cmake_minimum_required(VERSION 3.15)
 
 if(NOT CMAKE_PROJECT_NAME STREQUAL ROOT)
   project(Minuit2 LANGUAGES CXX)
diff --git a/StandAlone.cmake b/StandAlone.cmake
index 0a662ba..b7a05ca 100644
--- a/StandAlone.cmake
+++ b/StandAlone.cmake
@@ -1,12 +1,12 @@
-cmake_minimum_required(VERSION 3.1)
-
-# Tested with and supporting policies up to the following CMake version. 
-# Not using ... syntax due to parser bug in MSVC's built-in CMake server mode.
-if(${CMAKE_VERSION} VERSION_LESS 3.12)
-    cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
-else()
-    cmake_policy(VERSION 3.12)
-endif()
+cmake_minimum_required(VERSION 3.15)
+
+# # Tested with and supporting policies up to the following CMake version. 
+# # Not using ... syntax due to parser bug in MSVC's built-in CMake server mode.
+# if(${CMAKE_VERSION} VERSION_LESS 3.12)
+#     cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
+# else()
+#     cmake_policy(VERSION 3.12)
+# endif()
 
 include(FeatureSummary)
 include(CMakeDependentOption)