diff --git a/pkg/debug/gqlplayground/index.html.tmpl b/pkg/debug/gqlplayground/index.html.tmpl
index f4d17e8b..6fb1d1f2 100644
--- a/pkg/debug/gqlplayground/index.html.tmpl
+++ b/pkg/debug/gqlplayground/index.html.tmpl
@@ -1,67 +1,92 @@
 <!--
- *  Copyright (c) 2021 GraphQL Contributors
+ *  Copyright (c) 2025 GraphQL Contributors
  *  All rights reserved.
  *
  *  This source code is licensed under the license found in the
  *  LICENSE file in the root directory of this source tree.
 -->
-<!DOCTYPE html>
-<html>
+<!doctype html>
+<html lang="en">
   <head>
-    <title>zot GraphQL playground</title>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>GraphiQL 5 with React 19 and GraphiQL Explorer</title>
     <style>
       body {
-        height: 100%;
         margin: 0;
-        width: 100%;
-        overflow: hidden;
       }
 
       #graphiql {
-        height: 100vh;
+        height: 100dvh;
+      }
+
+      .loading {
+        height: 100%;
+        display: flex;
+        align-items: center;
+        justify-content: center;
+        font-size: 4rem;
       }
     </style>
-
+    <link rel="stylesheet" href="https://esm.sh/graphiql/dist/style.css" />
+    <link
+      rel="stylesheet"
+      href="https://esm.sh/@graphiql/plugin-explorer/dist/style.css"
+    />
     <!--
-      This GraphiQL example depends on Promise and fetch, which are available in
-      modern browsers, but can be "polyfilled" for older browsers.
-      GraphiQL itself depends on React DOM.
-      If you do not want to rely on a CDN, you can host these files locally or
-      include them directly in your favored resource bundler.
+     * Note:
+     * The ?standalone flag bundles the module along with all of its `dependencies`, excluding `peerDependencies`, into a single JavaScript file.
+     * `@emotion/is-prop-valid` is a shim to remove the console error ` module "@emotion /is-prop-valid" not found`. Upstream issue: https://github.com/motiondivision/motion/issues/3126
     -->
-    <script
-      crossorigin
-      src="https://unpkg.com/react@17/umd/react.development.js"
-    ></script>
-    <script
-      crossorigin
-      src="https://unpkg.com/react-dom@17/umd/react-dom.development.js"
-    ></script>
+    <script type="importmap">
+      {
+        "imports": {
+          "react": "https://esm.sh/react@19.1.0",
+          "react/": "https://esm.sh/react@19.1.0/",
 
-    <!--
-      These two files can be found in the npm module, however you may wish to
-      copy them directly into your environment, or perhaps include them in your
-      favored resource bundler.
-     -->
-    <link rel="stylesheet" href="https://unpkg.com/graphiql/graphiql.min.css" />
-  </head>
+          "react-dom": "https://esm.sh/react-dom@19.1.0",
+          "react-dom/": "https://esm.sh/react-dom@19.1.0/",
 
-  <body>
-    <div id="graphiql">Loading...</div>
-    <script
-      src="https://unpkg.com/graphiql/graphiql.min.js"
-      type="application/javascript"
-    ></script>
-    <script>
-      ReactDOM.render(
-        React.createElement(GraphiQL, {
-          fetcher: GraphiQL.createFetcher({
-            url: {{.Target}},
-          }),
-          defaultEditorToolsVisibility: true,
-        }),
-        document.getElementById('graphiql'),
-      );
+          "graphiql": "https://esm.sh/graphiql?standalone&external=react,react-dom,@graphiql/react,graphql",
+          "graphiql/": "https://esm.sh/graphiql/",
+          "@graphiql/plugin-explorer": "https://esm.sh/@graphiql/plugin-explorer?standalone&external=react,@graphiql/react,graphql",
+          "@graphiql/react": "https://esm.sh/@graphiql/react?standalone&external=react,react-dom,graphql,@graphiql/toolkit,@emotion/is-prop-valid",
+
+          "@graphiql/toolkit": "https://esm.sh/@graphiql/toolkit?standalone&external=graphql",
+          "graphql": "https://esm.sh/graphql@16.11.0",
+          "@emotion/is-prop-valid": "data:text/javascript,"
+        }
+      }
     </script>
+    <script type="module">
+      import React from 'react';
+      import ReactDOM from 'react-dom/client';
+      import { GraphiQL, HISTORY_PLUGIN } from 'graphiql';
+      import { createGraphiQLFetcher } from '@graphiql/toolkit';
+      import { explorerPlugin } from '@graphiql/plugin-explorer';
+      import 'graphiql/setup-workers/esm.sh';
+
+      const fetcher = createGraphiQLFetcher({
+        url: 'https://countries.trevorblades.com',
+      });
+      const plugins = [HISTORY_PLUGIN, explorerPlugin()];
+
+      function App() {
+        return React.createElement(GraphiQL, {
+          fetcher,
+          plugins,
+          defaultEditorToolsVisibility: true,
+        });
+      }
+
+      const container = document.getElementById('graphiql');
+      const root = ReactDOM.createRoot(container);
+      root.render(React.createElement(App));
+    </script>
+  </head>
+  <body>
+    <div id="graphiql">
+      <div class="loading">Loading…</div>
+    </div>
   </body>
-</html>
+</html>
\ No newline at end of file
