diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7f382f1ba..621c5482b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,6 +11,10 @@ project(kdeconnect VERSION ${RELEASE_SERVICE_VERSION})
 set(KF_MIN_VERSION "5.240")
 set(QT_MIN_VERSION "6.7.0")
 
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_EXTENSIONS OFF)
+set(CMAKE_CXX_STANDARD_REQUIRED TRUE)
+
 find_package(ECM ${KF_MIN_VERSION} REQUIRED NO_MODULE)
 set(CMAKE_MODULE_PATH ${ECM_MODULE_PATH} ${CMAKE_SOURCE_DIR}/cmake)