diff --git a/Barbershop-problem.pro b/Barbershop-problem.pro
index c788f24..60c1197 100644
--- a/Barbershop-problem.pro
+++ b/Barbershop-problem.pro
@@ -1,5 +1,5 @@
 TEMPLATE = app
-CONFIG += console c++17
+CONFIG += c++2a
 CONFIG -= app_bundle
 CONFIG -= qt