diff --git a/types/leaflet/index.d.ts b/types/leaflet/index.d.ts
index 8402d8bc9b..a08dcce5ae 100644
--- a/types/leaflet/index.d.ts
+++ b/types/leaflet/index.d.ts
@@ -919,6 +919,12 @@ export class GeoJSON<P = any> extends FeatureGroup<P> {
      */
     resetStyle(layer: Layer): Layer;
 
+    /**
+     * Same as FeatureGroup's setStyle method, but style-functions are also
+     * allowed here to set the style according to the feature.
+    */
+    setStyle(style: PathOptions | StyleFunction<P>): this;
+
     options: GeoJSONOptions<P>;
 }
 
diff --git a/types/leaflet/leaflet-tests.ts b/types/leaflet/leaflet-tests.ts
index d1375fa83f..5e8a876774 100644
--- a/types/leaflet/leaflet-tests.ts
+++ b/types/leaflet/leaflet-tests.ts
@@ -414,6 +414,14 @@ let nestedTwoCoords = [ [12, 13], [13, 14], [14, 15] ];
 const nestedLatLngs: L.LatLng[] = L.GeoJSON.coordsToLatLngs(nestedTwoCoords, 1);
 nestedTwoCoords = L.GeoJSON.latLngsToCoords(nestedLatLngs, 1);
 
+const geojson = new L.GeoJSON();
+const style: L.PathOptions = {
+    className: "string",
+};
+const styler: L.StyleFunction<MyProperties> = () => style;
+geojson.setStyle(style);
+geojson.setStyle(styler);
+
 class MyMarker extends L.Marker {
 	constructor() {
 		super([12, 13]);