https://github.com/NilsBrause/waylandpp/pull/85

--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -21,7 +21,7 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-cmake_minimum_required(VERSION 3.4)
+cmake_minimum_required(VERSION 3.4...4.0)
 project(waylandpp VERSION 1.0.0 LANGUAGES CXX)
 
 # packages