diff --git a/plasma5-integration.spec b/plasma5-integration.spec
index 7ee59d1..e4b18f2 100644
--- a/plasma5-integration.spec
+++ b/plasma5-integration.spec
@@ -36,6 +36,7 @@ BuildRequires:  cmake(KF5KIO) >= 5.17.0
 BuildRequires:  cmake(KF5Notifications) >= 5.17.0
 BuildRequires:  cmake(KF5Wayland) >= 5.5.0
 BuildRequires:  cmake(KF5WidgetsAddons) >= 5.17.0
+BuildRequires:  cmake(KF5WindowSystem) >= 5.17.0
 BuildRequires:  cmake(Qt5DBus) >= 5.5.0
 BuildRequires:  cmake(Qt5Widgets) >= 5.5.0
 BuildRequires:  cmake(Qt5X11Extras) >= 5.5.0