diff --git a/test/types/balanced-pool.test-d.ts b/test/types/balanced-pool.test-d.ts
index d4628b9487a..d7ccf7be8d4 100644
--- a/test/types/balanced-pool.test-d.ts
+++ b/test/types/balanced-pool.test-d.ts
@@ -10,6 +10,7 @@ expectAssignable<BalancedPool>(new BalancedPool('', { factory: () => new Dispatc
 expectAssignable<BalancedPool>(new BalancedPool('', { factory: (origin, opts) => new Client(origin, opts) }))
 expectAssignable<BalancedPool>(new BalancedPool('', { connections: 1 }))
 expectAssignable<BalancedPool>(new BalancedPool(['http://localhost:4242', 'http://www.nodejs.org']))
+expectAssignable<BalancedPool>(new BalancedPool([new URL('http://localhost:4242'),new URL('http://www.nodejs.org')], {}))
 
 {
   const pool = new BalancedPool('', {})
@@ -21,6 +22,8 @@ expectAssignable<BalancedPool>(new BalancedPool(['http://localhost:4242', 'http:
   // upstreams
   expectAssignable<BalancedPool>(pool.addUpstream('http://www.nodejs.org'))
   expectAssignable<BalancedPool>(pool.removeUpstream('http://www.nodejs.org'))
+  expectAssignable<BalancedPool>(pool.addUpstream(new URL('http://www.nodejs.org')))
+  expectAssignable<BalancedPool>(pool.removeUpstream(new URL('http://www.nodejs.org')))
   expectAssignable<string[]>(pool.upstreams)
 
 
diff --git a/types/balanced-pool.d.ts b/types/balanced-pool.d.ts
index b5de726eeca..d1e9375875f 100644
--- a/types/balanced-pool.d.ts
+++ b/types/balanced-pool.d.ts
@@ -5,10 +5,10 @@ import { URL } from 'url'
 export default BalancedPool
 
 declare class BalancedPool extends Dispatcher {
-  constructor(url: string | URL | string[], options?: Pool.Options);
+  constructor(url: string | string[] | URL | URL[], options?: Pool.Options);
 
-  addUpstream(upstream: string): BalancedPool;
-  removeUpstream(upstream: string): BalancedPool;
+  addUpstream(upstream: string | URL): BalancedPool;
+  removeUpstream(upstream: string | URL): BalancedPool;
   upstreams: Array<string>;
 
   /** `true` after `pool.close()` has been called. */