diff --git a/src/proxy/index.ts b/src/proxy/index.ts
index bd012191d..c352cc4d0 100644
--- a/src/proxy/index.ts
+++ b/src/proxy/index.ts
@@ -11,6 +11,7 @@ import {
 import http, { ServerOptions } from 'http';
 import https from 'https';
 import * as urlUtils from '../utils/url';
+import scriptProcessor from '../processing/resources/script';
 import { readSync as read } from 'read-file-relative';
 import { respond500, respondWithJSON, fetchBody, addPreventCachingHeaders } from '../utils/http';
 import { run as runRequestPipeline } from '../request-pipeline';
@@ -214,6 +215,7 @@ export default class Proxy extends Router {
 
     // API
     close (): void {
+        scriptProcessor.jsCache.reset()
         this.server1.close();
         this.server2.close();
         this._closeSockets();