diff --git a/types/koa-router/index.d.ts b/types/koa-router/index.d.ts
index b5dc934965..29e85a75de 100644
--- a/types/koa-router/index.d.ts
+++ b/types/koa-router/index.d.ts
@@ -4,6 +4,7 @@
 //                 Pavel Ivanov <https://github.com/schfkt>
 //                 JounQin <https://github.com/JounQin>
 //                 Romain Faust <https://github.com/romain-faust>
+//                 Guillaume Mayer <https://github.com/Guillaume-Mayer>
 // Definitions: https://github.com/hellopao/DefinitelyTyped
 // TypeScript Version: 2.3
 
@@ -86,6 +87,10 @@ declare namespace Router {
         sensitive?: boolean;
         strict?: boolean;
     }
+    
+    export interface IUrlOptionsQuery {
+        query?: object | string;
+    }
 
     export class ParamName {
         asterisk: boolean;
@@ -262,6 +267,23 @@ declare class Router {
     url(name: string, params: Object): string;
     url(name: string, params: Object): Error;
 
+    /**
+     * Generate URL for route with query part.
+     * 
+     * Takes either map of named `params` or series of
+     * arguments (for regular expression routes)
+     * 
+     * Query is generated from `options` argument:
+     * 
+     * router.url('user', { id: 3 }, { query: { limit: 1 } });
+     * // => "/users/3?limit=1"
+     *
+     * router.url('user', { id: 3 }, { query: "limit=1" });
+     * // => "/users/3?limit=1"
+     */
+    url(name: string, params: Object, options?: Router.IUrlOptionsQuery): string;
+    url(name: string, params: Object, options?: Router.IUrlOptionsQuery): Error;
+
     /**
      * Match given `path` and return corresponding routes.
      */
diff --git a/types/koa-router/koa-router-tests.ts b/types/koa-router/koa-router-tests.ts
index b2bec9ad0c..d7b3807b2d 100644
--- a/types/koa-router/koa-router-tests.ts
+++ b/types/koa-router/koa-router-tests.ts
@@ -18,7 +18,13 @@ router
         ctx.body = ctx.router.url('user-accounts', { id: ctx.params.id })
     })
     .get('user-accounts', '/users/:id/accounts', function (ctx, next) {
-        // ...
+        ctx.body = {
+          test1: ctx.router.url('users', { id: 3 }, { query: { limit: 1 } }),
+          test2: ctx.router.url('users', { id: 3 }, { query: "limit=1" }),
+          test3: ctx.router.url('users', 3, { query: { limit: 1 } }),
+          test4: ctx.router.url('users', [3], { query: "limit=1" }),
+          test5: ctx.router.url('users', ["3"], { query: { limit: "1" } }),
+        }
     })
     .post('/users', function (ctx, next) {
         // ...