diff --git a/scripts/gulpfiles/config.js b/scripts/gulpfiles/config.js
index 9080866fa..af98fb579 100644
--- a/scripts/gulpfiles/config.js
+++ b/scripts/gulpfiles/config.js
@@ -20,7 +20,7 @@ var path = require('path');
 // - tests/scripts/check_metadata.sh
 // - tests/scripts/update_metadata.sh
 // - blockly_uncompressed.js (for location of deps.js)
-// - tests/playgrounds/prepare.js (for location of deps.js)
+// - tests/bootstrap.js (for location of deps.js)
 // - tests/mocha/index.html (for location of deps.mocha.js)
 
 // Directory to write compiled output to.
diff --git a/tests/playgrounds/blockly.mjs b/tests/blockly.mjs
similarity index 100%
rename from tests/playgrounds/blockly.mjs
rename to tests/blockly.mjs
diff --git a/tests/playgrounds/prepare.js b/tests/bootstrap.js
similarity index 100%
rename from tests/playgrounds/prepare.js
rename to tests/bootstrap.js
diff --git a/tests/playground.html b/tests/playground.html
index 7a555392f..5443c1ecf 100644
--- a/tests/playground.html
+++ b/tests/playground.html
@@ -4,15 +4,16 @@
 <meta charset="utf-8">
 <title>Blockly Playground</title>
 
-  <!-- This script loads uncompressed when on localhost and loads compressed when it is being hosted.
-       Please add any other dependencies to playgrounds/prepare.js.-->
-<script src="playgrounds/prepare.js"></script>
+  <!-- This script loads uncompressed when on localhost and loads
+       compressed when it is being hosted.  Please add any other
+       dependencies to bootstrap.js. -->
+<script src="bootstrap.js"></script>
 <script src="playgrounds/screenshot.js"></script>
 <script src="../node_modules/@blockly/dev-tools/dist/index.js"></script>
 <script type=module>
-import Blockly from './playgrounds/blockly.mjs';
+import Blockly from './blockly.mjs';
 
-const IS_UNCOMPRESSED = Boolean(window.BlocklyLoader);  // See prepare.js
+const IS_UNCOMPRESSED = Boolean(window.BlocklyLoader);  // See bootstrap.js
 var workspace = null;
 
 function start() {
diff --git a/tests/playgrounds/advanced_playground.html b/tests/playgrounds/advanced_playground.html
index 1510555b7..07eec11db 100644
--- a/tests/playgrounds/advanced_playground.html
+++ b/tests/playgrounds/advanced_playground.html
@@ -3,14 +3,14 @@
 <head>
 <meta charset="utf-8">
 <title>Advanced Blockly Playground</title>
-<script src="prepare.js"></script>
+<script src="../bootstrap.js"></script>
 <script src="./screenshot.js"></script>
 <script src="../themes/test_themes.js"></script>
 <script src="../../node_modules/@blockly/dev-tools/dist/index.js"></script>
 <script src="../../node_modules/@blockly/theme-modern/dist/index.js"></script>
 
 <script type="module">
-import Blockly from './blockly.mjs';
+import Blockly from '../blockly.mjs';
 'use strict';
 
 function start() {
