Index: package.json
===================================================================
--- package.json	(revision 51686)
+++ package.json	(working copy)
@@ -150,7 +150,7 @@
 		"regenerator-runtime": "0.13.7",
 		"twemoji": "13.1.0",
 		"underscore": "1.13.1",
-		"whatwg-fetch": "3.0.0"
+		"whatwg-fetch": "3.6.2"
 	},
 	"scripts": {
 		"build": "grunt build",
Index: package-lock.json
===================================================================
--- package-lock.json	(revision 51686)
+++ package-lock.json	(working copy)
@@ -26436,9 +26436,9 @@
 			}
 		},
 		"whatwg-fetch": {
-			"version": "3.0.0",
-			"resolved": "https://registry.npmjs.org/whatwg-fetch/-/whatwg-fetch-3.0.0.tgz",
-			"integrity": "sha512-9GSJUgz1D4MfyKU7KRqwOjXCXTqWdFNvEr7eUBYchQiVc744mqK/MzXPNR2WsPkmkOa4ywfg8C2n8h+13Bey1Q=="
+			"version": "3.6.2",
+			"resolved": "https://registry.npmjs.org/whatwg-fetch/-/whatwg-fetch-3.6.2.tgz",
+			"integrity": "sha512-bJlen0FcuU/0EMLrdbJ7zOnW6ITZLrZMIarMUVmdKtsGvZna8vxKYaexICWPfZ8qwf9fzNq+UEIZrnSaApt6RA=="
 		},
 		"whatwg-mimetype": {
 			"version": "2.3.0",
Index: src/wp-includes/script-loader.php
===================================================================
--- src/wp-includes/script-loader.php	(revision 51686)
+++ src/wp-includes/script-loader.php	(working copy)
@@ -101,7 +101,7 @@
 		'regenerator-runtime'         => '0.13.7',
 		'moment'                      => '2.29.1',
 		'lodash'                      => '4.17.19',
-		'wp-polyfill-fetch'           => '3.0.0',
+		'wp-polyfill-fetch'           => '3.6.2',
 		'wp-polyfill-formdata'        => '4.0.0',
 		'wp-polyfill-node-contains'   => '3.105.0',
 		'wp-polyfill-url'             => '3.6.4',