diff -ura ./a/CMakeLists.txt ./b/CMakeLists.txt
--- a/CMakeLists.txt	2025-10-24 20:29:32.795967971 +0200
+++ b/CMakeLists.txt	2025-10-24 20:31:14.291030071 +0200
@@ -4,21 +4,21 @@
 
 # Enable C++14
 set(CXX_STANDARD_REQUIRED ON)
-set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD 20)
 
 set(CMAKE_AUTOMOC ON)
 set(CMAKE_AUTOUIC ON)
 
 set(CMAKE_INCLUDE_CURRENT_DIR ON)
 
-find_package(Qt5 5.2 REQUIRED Core Gui Widgets)
+find_package(Qt6 6.0 REQUIRED Core Gui Widgets)
 
 set(SOURCES main.cpp dialog.cpp)
 set(HEADERS dialog.h)
 set(FORMS dialog.ui)
 
 add_executable(${PROJECT_NAME} ${SOURCES} ${HEADERS} ${FORMS})
-target_link_libraries(${PROJECT_NAME} Qt5::Core Qt5::Gui Qt5::Widgets)
+target_link_libraries(${PROJECT_NAME} Qt6::Core Qt6::Gui Qt6::Widgets)
 
 install(TARGETS ${PROJECT_NAME}
         RUNTIME DESTINATION bin