diff --git a/CMakeLists.txt b/CMakeLists.txt
index 93eccf91108d44e0baaefc33d006c815110eaf5e..806756d4b12f2a60872b82a19de75aecd76275f4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@
 # top-level CMakeLists.txt for building BornAgain
 ############################################################################
 
-cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.15 FATAL_ERROR)
 
 set(CMAKE_MODULE_PATH
     ${CMAKE_SOURCE_DIR}/cmake