diff --git a/types/leaflet/index.d.ts b/types/leaflet/index.d.ts
index 22f71a9187..f99f76817d 100644
--- a/types/leaflet/index.d.ts
+++ b/types/leaflet/index.d.ts
@@ -494,7 +494,7 @@ export interface TileLayerOptions extends GridLayerOptions {
     tms?: boolean;
     zoomReverse?: boolean;
     detectRetina?: boolean;
-    crossOrigin?: boolean;
+    crossOrigin?: CrossOrigin;
     // [name: string]: any;
     // You are able add additional properties, but it makes this interface unchackable.
     // See: https://github.com/DefinitelyTyped/DefinitelyTyped/issues/15313
@@ -550,12 +550,16 @@ export namespace tileLayer {
     function wms(baseUrl: string, options?: WMSOptions): TileLayer.WMS;
 }
 
+export type CrossOrigin = boolean | string;
+
 export interface ImageOverlayOptions extends InteractiveLayerOptions {
     opacity?: number;
     alt?: string;
     interactive?: boolean;
     attribution?: string;
-    crossOrigin?: boolean;
+    crossOrigin?: CrossOrigin;
+    errorOverlayUrl?: string;
+    zIndex?: number;
     className?: string;
 }
 
@@ -569,6 +573,9 @@ export class ImageOverlay extends Layer {
     /** Update the bounds that this ImageOverlay covers */
     setBounds(bounds: LatLngBounds): this;
 
+    /** Changes the zIndex of the image overlay */
+    setZIndex(value: number): this;
+
     /** Get the bounds that this ImageOverlay covers */
     getBounds(): LatLngBounds;
 
diff --git a/types/leaflet/leaflet-tests.ts b/types/leaflet/leaflet-tests.ts
index 8b024d790e..2e0f139e9d 100644
--- a/types/leaflet/leaflet-tests.ts
+++ b/types/leaflet/leaflet-tests.ts
@@ -263,13 +263,15 @@ imageOverlayOptions = {
 	alt: 'alt',
 	interactive: true,
 	attribution: 'attribution',
+	errorOverlayUrl: 'http://www.test.com/error.png',
+	zIndex: 1,
 	crossOrigin: true,
 	className: 'className',
 	bubblingMouseEvents: false,
 	pane: 'pane'
 };
 
-const imageOverlayBounds = latLngBounds;
+let imageOverlayBounds = latLngBounds;
 let imageOverlay: L.ImageOverlay;
 imageOverlay = L.imageOverlay('https://www.google.ru/images/branding/googlelogo/2x/googlelogo_color_120x44dp.png', imageOverlayBounds);
 imageOverlay = L.imageOverlay('https://www.google.ru/images/branding/googlelogo/2x/googlelogo_color_120x44dp.png', imageOverlayBounds, imageOverlayOptions);
@@ -278,6 +280,14 @@ imageOverlay = L.imageOverlay('https://www.google.ru/images/branding/googlelogo/
 	alt: 'alt',
 	className: 'className',
 });
+imageOverlay.setOpacity(100);
+imageOverlay.bringToFront();
+imageOverlay.bringToBack();
+imageOverlay.setUrl('https://www.google.ru/images/branding/googlelogo/2x/googlelogo_color_120x44dp.png');
+imageOverlay.setBounds(imageOverlayBounds);
+imageOverlay.setZIndex(1);
+imageOverlayBounds = imageOverlay.getBounds();
+html = imageOverlay.getElement();
 
 // videoOverlay
 let videoOverlayOptions: L.VideoOverlayOptions;