diff --git a/CMakeLists.txt b/CMakeLists.txt
index a3b0862c6c..554a9263da 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,7 +4,7 @@ project(KWIN)
 set(PROJECT_VERSION "5.13.80")
 set(PROJECT_VERSION_MAJOR 5)
 
-set(QT_MIN_VERSION "5.9.0")
+set(QT_MIN_VERSION "5.11.0")
 set(KF5_MIN_VERSION "5.42.0")
 
 set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules ${CMAKE_MODULE_PATH} )