diff --git a/types/three/examples/jsm/postprocessing/MaskPass.d.ts b/types/three/examples/jsm/postprocessing/MaskPass.d.ts
index 7530a4543..2d5fa7bc4 100644
--- a/types/three/examples/jsm/postprocessing/MaskPass.d.ts
+++ b/types/three/examples/jsm/postprocessing/MaskPass.d.ts
@@ -1,10 +1,10 @@
-import { Scene, Camera } from '../../../src/Three';
+import { Object3D, Camera } from '../../../src/Three';
 
 import { Pass } from './Pass';
 
 export class MaskPass extends Pass {
-    constructor(scene: Scene, camera: Camera);
-    scene: Scene;
+    constructor(scene: Object3D, camera: Camera);
+    scene: Object3D;
     camera: Camera;
     inverse: boolean;
 }
diff --git a/types/three/examples/jsm/postprocessing/Pass.d.ts b/types/three/examples/jsm/postprocessing/Pass.d.ts
index 1e8721e78..7ef642c21 100644
--- a/types/three/examples/jsm/postprocessing/Pass.d.ts
+++ b/types/three/examples/jsm/postprocessing/Pass.d.ts
@@ -17,11 +17,11 @@ export class Pass {
     ): void;
 }
 
-export class FullScreenQuad {
-    constructor(material?: Material);
+export class FullScreenQuad<M extends Material> {
+    constructor(material?: M);
 
     render(renderer: WebGLRenderer): void;
     dispose(): void;
 
-    material: Material;
+    material: M;
 }
diff --git a/types/three/examples/jsm/postprocessing/RenderPass.d.ts b/types/three/examples/jsm/postprocessing/RenderPass.d.ts
index ec2fe7c8a..2e226f040 100644
--- a/types/three/examples/jsm/postprocessing/RenderPass.d.ts
+++ b/types/three/examples/jsm/postprocessing/RenderPass.d.ts
@@ -1,10 +1,10 @@
-import { Scene, Camera, Material, Color } from '../../../src/Three';
+import { Object3D, Camera, Material, Color } from '../../../src/Three';
 
 import { Pass } from './Pass';
 
 export class RenderPass extends Pass {
-    constructor(scene: Scene, camera: Camera, overrideMaterial?: Material, clearColor?: Color, clearAlpha?: number);
-    scene: Scene;
+    constructor(scene: Object3D, camera: Camera, overrideMaterial?: Material, clearColor?: Color, clearAlpha?: number);
+    scene: Object3D;
     camera: Camera;
     overrideMaterial: Material;
     clearColor: Color;
diff --git a/types/three/examples/jsm/postprocessing/SSAARenderPass.d.ts b/types/three/examples/jsm/postprocessing/SSAARenderPass.d.ts
index 59cc003e6..1198caf39 100644
--- a/types/three/examples/jsm/postprocessing/SSAARenderPass.d.ts
+++ b/types/three/examples/jsm/postprocessing/SSAARenderPass.d.ts
@@ -1,9 +1,9 @@
-import { Scene, Camera, ColorRepresentation, ShaderMaterial, WebGLRenderTarget } from '../../../src/Three';
+import { Scene, Camera, ColorRepresentation, ShaderMaterial, WebGLRenderTarget, Object3D } from '../../../src/Three';
 
 import { Pass } from './Pass';
 
 export class SSAARenderPass extends Pass {
-    constructor(scene: Scene, camera: Camera, clearColor: ColorRepresentation, clearAlpha: number);
+    constructor(scene: Object3D, camera: Camera, clearColor?: ColorRepresentation, clearAlpha?: number);
     scene: Scene;
     camera: Camera;
     sampleLevel: number;
diff --git a/types/three/examples/jsm/postprocessing/ShaderPass.d.ts b/types/three/examples/jsm/postprocessing/ShaderPass.d.ts
index ff67e99d6..54da7044b 100644
--- a/types/three/examples/jsm/postprocessing/ShaderPass.d.ts
+++ b/types/three/examples/jsm/postprocessing/ShaderPass.d.ts
@@ -19,5 +19,5 @@ export class ShaderPass<T extends {} = TUniforms, Uniforms extends TUniforms = E
     textureID: string;
     uniforms: AvoidNullUniforms<Uniforms>;
     material: ShaderMaterial<Uniforms>;
-    fsQuad: FullScreenQuad;
+    fsQuad: FullScreenQuad<typeof this.material>;
 }