diff --git a/test/types/dispatcher.test-d.ts b/test/types/dispatcher.test-d.ts
index 303abd0ade7..1c84ed01443 100644
--- a/test/types/dispatcher.test-d.ts
+++ b/test/types/dispatcher.test-d.ts
@@ -35,6 +35,7 @@ expectAssignable<Dispatcher>(new Dispatcher())
   expectAssignable<boolean>(dispatcher.dispatch({ origin: '', path: '', method: 'GET', headers: mapHeaders, reset: true }, {}))
   expectAssignable<boolean>(dispatcher.dispatch({ origin: '', path: '', method: 'GET', headers: iteratorHeaders, reset: true }, {}))
   expectAssignable<boolean>(dispatcher.dispatch({ origin: new URL('http://localhost'), path: '', method: 'GET' }, {}))
+  expectAssignable<boolean>(dispatcher.dispatch({ path: '', method: "CUSTOM" }, {}))
 
   // connect
   expectAssignable<Promise<Dispatcher.ConnectData>>(dispatcher.connect({ origin: '', path: '', maxRedirections: 0 }))
diff --git a/types/dispatcher.d.ts b/types/dispatcher.d.ts
index 6f33adc4a1d..eafa2e5907e 100644
--- a/types/dispatcher.d.ts
+++ b/types/dispatcher.d.ts
@@ -234,7 +234,7 @@ declare namespace Dispatcher {
     onBodySent?(chunkSize: number, totalBytesSent: number): void;
   }
   export type PipelineHandler<TOpaque = null> = (data: PipelineHandlerData<TOpaque>) => Readable;
-  export type HttpMethod = 'GET' | 'HEAD' | 'POST' | 'PUT' | 'DELETE' | 'CONNECT' | 'OPTIONS' | 'TRACE' | 'PATCH';
+  export type HttpMethod = 'GET' | 'HEAD' | 'POST' | 'PUT' | 'DELETE' | 'CONNECT' | 'OPTIONS' | 'TRACE' | 'PATCH' | (string & Record<never, never>);
 
   /**
    * @link https://fetch.spec.whatwg.org/#body-mixin