diff --git a/src/extern/kwin.d.ts b/src/extern/kwin.d.ts
index fe11134..2c7b4fa 100644
--- a/src/extern/kwin.d.ts
+++ b/src/extern/kwin.d.ts
@@ -15,14 +15,14 @@ declare const workspace: {
     currentActivity: string;
 
     // Signals
-    clientAdded: QSignal;
-    clientRemoved: QSignal;
-    clientMinimized: QSignal;
-    clientUnminimized: QSignal;
-    clientMaximizeSet: QSignal;
-    clientActivated: QSignal;
-    numberDesktopsChanged: QSignal;
-    virtualScreenSizeChanged: QSignal;
+    clientAdded: QSignal<[KwinClient]>;
+    clientRemoved: QSignal<[AbstractClient]>;
+    clientMinimized: QSignal<[AbstractClient]>;
+    clientUnminimized: QSignal<[AbstractClient]>;
+    clientMaximizeSet: QSignal<[AbstractClient, horizontally: boolean, vertically: boolean]>;
+    clientActivated: QSignal<[AbstractClient]>;
+    numberDesktopsChanged: QSignal<[oldNumberOfVirtualDesktops: number]>;
+    virtualScreenSizeChanged: QSignal<[void]>;
 
     // Functions
     clientArea(option: ClientAreaOption, screenNumber: number, desktopNumber: number);
@@ -52,14 +52,14 @@ interface AbstractClient {
     minimized: boolean;
 
     // Signals
-    fullScreenChanged: QSignal;
-    desktopChanged: QSignal;
-    activitiesChanged: QSignal;
-    captionChanged: QSignal;
-    tileChanged: QSignal;
-    moveResizedChanged: QSignal;
-    moveResizeCursorChanged: QSignal;
-    clientStartUserMovedResized: QSignal;
+    fullScreenChanged: QSignal<[void]>;
+    desktopChanged: QSignal<[void]>;
+    activitiesChanged: QSignal<[AbstractClient]>;
+    captionChanged: QSignal<[void]>;
+    tileChanged: QSignal<[Tile]>;
+    moveResizedChanged: QSignal<[void]>;
+    moveResizeCursorChanged: QSignal<[void]>;
+    clientStartUserMovedResized: QSignal<[void]>;
 
     // Functions
     setMaximize(vertically: boolean, horizontally: boolean): void;
@@ -74,7 +74,7 @@ interface TopLevel extends AbstractClient {
     managed: boolean;
 
     // Signals
-    frameGeometryChanged: QSignal;
+    frameGeometryChanged: QSignal<[TopLevel, oldGeometry: QRect]>;
 }
 
 interface KwinClient extends TopLevel {}
diff --git a/src/extern/qt.d.ts b/src/extern/qt.d.ts
index ecc698b..e9ffba9 100644
--- a/src/extern/qt.d.ts
+++ b/src/extern/qt.d.ts
@@ -28,14 +28,14 @@ type QSize = {
     height: number;
 }
 
-type QSignal = {
-    connect(handler: (...args: any[]) => void): void;
-    disconnect(handler: (...args: any[]) => void): void;
+type QSignal<T extends unknown[]> = {
+    connect(handler: (...args: [...T]) => void): void;
+    disconnect(handler: (...args: [...T]) => void): void;
 }
 
 type QQmlTimer = {
     interval: number;
-    triggered: QSignal;
+    triggered: QSignal<[void]>;
     restart(): void;
     destroy(): void;
 }
diff --git a/src/utils/SignalManager.ts b/src/utils/SignalManager.ts
index 0f95b06..b8deb5b 100644
--- a/src/utils/SignalManager.ts
+++ b/src/utils/SignalManager.ts
@@ -1,11 +1,11 @@
 class SignalManager {
-    private connections: { signal: QSignal, handler: (...args: any[]) => void }[];
+    private connections: { signal: QSignal<any>, handler: (...args: any) => void }[];
 
     constructor() {
         this.connections = [];
     }
 
-    public connect(signal: QSignal, handler: (...args: any[]) => void) {
+    public connect<T extends unknown[]>(signal: QSignal<T>, handler: (...args: [...T]) => void) {
         signal.connect(handler);
         this.connections.push({ signal: signal, handler: handler });
     }