diff --git a/packages/ui-default/components/preview/preview.page.ts b/packages/ui-default/components/preview/preview.page.ts
index c9d1b54a4..76c3fce17 100644
--- a/packages/ui-default/components/preview/preview.page.ts
+++ b/packages/ui-default/components/preview/preview.page.ts
@@ -133,7 +133,7 @@ export async function previewFile(ev, type = '') {
     if (ext === 'pdf') return previewPDF(`${link}${link.includes('?') ? '&' : '?'}noDisposition=1`);
     Notification.info(i18n('Loading file...'));
     try {
-      const { url } = await request.get(link, {}, { headers: { 'Do-Not-Cache': 'on' } });
+      const { url } = await request.get(link, {}, { headers: { Pragma: 'no-cache' } });
       if (/^(doc|xls|ppt)x?$/.test(ext)) return previewOffice(link, url);
       content = await request.get(url, undefined, { dataType: 'text' });
     } catch (e) {
diff --git a/packages/ui-default/service-worker.ts b/packages/ui-default/service-worker.ts
index 3744b59a1..63be7fc03 100644
--- a/packages/ui-default/service-worker.ts
+++ b/packages/ui-default/service-worker.ts
@@ -26,7 +26,7 @@ function shouldCache(name: string, request?: Request) {
   if (!name.split('/').pop().includes('.')) return false;
   if (process.env.NODE_ENV !== 'production' && (name.includes('.hot-update.') || name.includes('?version='))) return false;
   // For files download, a response is formatted as string
-  if (request && request.headers.get('Do-Not-Cache')) return false;
+  if (request && request.headers.get('Pragma') === 'no-cache') return false;
   return true;
 }
 function shouldPreCache(name: string) {
diff --git a/packages/ui-default/templates/layout/html5.html b/packages/ui-default/templates/layout/html5.html
index 7b3683211..0423be024 100644
--- a/packages/ui-default/templates/layout/html5.html
+++ b/packages/ui-default/templates/layout/html5.html
@@ -67,7 +67,7 @@
     <script type="text/javascript" src="{{ UiContext.cdn_prefix }}l/{{ _('__id') }}"></script>
     <script src="{{ UiContext.cdn_prefix }}default.theme.js?version={{ global.Hydro.version['ui-default'] }}"></script>
     {% if process.env.DEV %}
-      <script type="text/javascript" src="/hydro.js"></script>
+      <script type="text/javascript" src="/hydro.js?version={{ global.Hydro.version['ui-default'] }}"></script>
     {% else %}
       <script type="text/javascript" src="{{ UiContext.cdn_prefix }}hydro-{{ global.Hydro.version['ui-default'] }}.js"></script>
     {% endif %}