diff --git a/packages/react/src/document.jsx b/packages/react/src/document.jsx
index ef1dabf..8488ec0 100644
--- a/packages/react/src/document.jsx
+++ b/packages/react/src/document.jsx
@@ -13,8 +13,9 @@ function Document({
   base,
   config,
   css,
-  meta,
+  hasVendor,
   icon,
+  meta,
   root,
   title,
 }) {
@@ -37,6 +38,7 @@ function Document({
           {config}
           <div id={appMountId}>{root}</div>
         </div>
+        {hasVendor && <script src="/assets/web-vendor.js" />}
       </body>
     </html>
   );
@@ -47,6 +49,7 @@ Document.propTypes = {
   base: PropTypes.string.isRequired,
   config: PropTypes.element.isRequired,
   css: PropTypes.arrayOf(PropTypes.string).isRequired,
+  hasVendor: PropTypes.bool.isRequired,
   icon: PropTypes.string.isRequired,
   meta: PropTypes.objectOf(PropTypes.string).isRequired,
   root: PropTypes.element.isRequired,
diff --git a/packages/react/src/ssr.js b/packages/react/src/ssr.js
index bbda45f..e10a97d 100644
--- a/packages/react/src/ssr.js
+++ b/packages/react/src/ssr.js
@@ -16,6 +16,7 @@ export default async (stream, req, flecks) => {
   } = flecks.get('@flecks/web/server');
   // Extract assets.
   const css = [];
+  let hasVendor = false;
   let inline = '';
   let isInScript = 0;
   let isSkipping = false;
@@ -34,7 +35,12 @@ export default async (stream, req, flecks) => {
           isSkipping = true;
         }
         else if (attribs.src) {
-          js.push(attribs.src);
+          if (attribs.src.match(/web-vendor\.js$/)) {
+            hasVendor = true;
+          }
+          else {
+            js.push(attribs.src);
+          }
         }
       }
       if ('style' === tagName && attribs['data-href']) {
@@ -66,6 +72,7 @@ export default async (stream, req, flecks) => {
         {dangerouslySetInnerHTML: {__html: await configSource(flecks, req)}},
       ),
       css,
+      hasVendor,
       icon,
       meta,
       root: React.createElement(await root(flecks, req)),