diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3ece61c540..0e00408e89 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,7 +4,7 @@ set(PROJECT_VERSION "5.20.90") # Handled by release scripts
 project(KWin VERSION ${PROJECT_VERSION})
 
 set(QT_MIN_VERSION "5.15.0")
-set(KF5_MIN_VERSION "5.74")
+set(KF5_MIN_VERSION "5.78")
 
 set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules ${CMAKE_MODULE_PATH})