diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index 298a2084901b..47eea45772bc 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -59461,7 +59461,7 @@
    "testharness"
   ],
   "bluetooth/interfaces.html": [
-   "4d97da8dc427bd500dafd684e08da59a9a0d35c4",
+   "4558862f81e4a5a3a3d16f7156c5cff63f4b7073",
    "testharness"
   ],
   "bluetooth/readValue/characteristic/blocklisted-characteristic.html": [
@@ -61533,7 +61533,7 @@
    "support"
   ],
   "css/get-computed-style-for-url.html": [
-   "2e90c0abd6c83bb11113f39a557a4c1c1c24364b",
+   "cb3b467160026d20c4e283c12ded20fe2d025f88",
    "testharness"
   ],
   "css/green.png": [
diff --git a/tests/wpt/mozilla/meta/bluetooth/interfaces.html.ini b/tests/wpt/mozilla/meta/bluetooth/interfaces.html.ini
index e54f47ade0ef..8edfcf5a3641 100644
--- a/tests/wpt/mozilla/meta/bluetooth/interfaces.html.ini
+++ b/tests/wpt/mozilla/meta/bluetooth/interfaces.html.ini
@@ -1,11 +1,5 @@
 [interfaces.html]
   type: testharness
-  [Bluetooth interface: existence and properties of interface object]
-    expected: FAIL
-
-  [Bluetooth interface: existence and properties of interface prototype object]
-    expected: FAIL
-
   [Bluetooth interface: operation getAvailability()]
     expected: FAIL
 
@@ -48,12 +42,6 @@
   [Bluetooth interface: window.navigator.bluetooth must inherit property "onserviceremoved" with the proper type (8)]
     expected: FAIL
 
-  [BluetoothPermissionResult interface: existence and properties of interface object]
-    expected: FAIL
-
-  [BluetoothPermissionResult interface: existence and properties of interface prototype object]
-    expected: FAIL
-
   [BluetoothPermissionResult interface: attribute devices]
     expected: FAIL
 
@@ -75,12 +63,6 @@
   [ValueEvent interface: attribute value]
     expected: FAIL
 
-  [BluetoothDevice interface: existence and properties of interface object]
-    expected: FAIL
-
-  [BluetoothDevice interface: existence and properties of interface prototype object]
-    expected: FAIL
-
   [BluetoothDevice interface: operation watchAdvertisements()]
     expected: FAIL
 
@@ -144,12 +126,6 @@
   [BluetoothRemoteGATTServer interface: operation getPrimaryServices(BluetoothServiceUUID)]
     expected: FAIL
 
-  [BluetoothRemoteGATTService interface: existence and properties of interface object]
-    expected: FAIL
-
-  [BluetoothRemoteGATTService interface: existence and properties of interface prototype object]
-    expected: FAIL
-
   [BluetoothRemoteGATTService interface: operation getCharacteristic(BluetoothCharacteristicUUID)]
     expected: FAIL
 
@@ -165,12 +141,6 @@
   [BluetoothRemoteGATTService interface: attribute oncharacteristicvaluechanged]
     expected: FAIL
 
-  [BluetoothRemoteGATTCharacteristic interface: existence and properties of interface object]
-    expected: FAIL
-
-  [BluetoothRemoteGATTCharacteristic interface: existence and properties of interface prototype object]
-    expected: FAIL
-
   [BluetoothRemoteGATTCharacteristic interface: operation getDescriptor(BluetoothDescriptorUUID)]
     expected: FAIL
 
diff --git a/tests/wpt/mozilla/tests/bluetooth/interfaces.html b/tests/wpt/mozilla/tests/bluetooth/interfaces.html
index 199d6b05075c..2aece858f4fe 100644
--- a/tests/wpt/mozilla/tests/bluetooth/interfaces.html
+++ b/tests/wpt/mozilla/tests/bluetooth/interfaces.html
@@ -27,6 +27,18 @@ <h1>WebBluetooth IDL tests</h1>
 
   interface ArrayBufferView {
   };
+
+  dictionary PermissionDescriptor {
+    required PermissionName name;
+  };
+
+  interface PermissionStatus {
+  };
+
+  dictionary EventInit {
+    boolean bubbles = false;
+    boolean cancelable = false;
+  };
 </script>
 <script id='webbluetooth_idl' type="text/plain">
 dictionary BluetoothDataFilterInit {
@@ -49,7 +61,7 @@ <h1>WebBluetooth IDL tests</h1>
   boolean acceptAllDevices = false;
 };
 
-interface Bluetooth {
+interface Bluetooth : EventTarget {
   [SecureContext]
   Promise<boolean> getAvailability();
   [SecureContext]
@@ -59,7 +71,6 @@ <h1>WebBluetooth IDL tests</h1>
   [SecureContext]
   Promise<BluetoothDevice> requestDevice(optional RequestDeviceOptions options);
 };
-Bluetooth implements EventTarget;
 Bluetooth implements BluetoothDeviceEventHandlers;
 Bluetooth implements CharacteristicEventHandlers;
 Bluetooth implements ServiceEventHandlers;
@@ -95,7 +106,7 @@ <h1>WebBluetooth IDL tests</h1>
   any value = null;
 };
 
-interface BluetoothDevice {
+interface BluetoothDevice : EventTarget {
   readonly attribute DOMString id;
   readonly attribute DOMString? name;
   readonly attribute BluetoothRemoteGATTServer? gatt;
@@ -104,7 +115,6 @@ <h1>WebBluetooth IDL tests</h1>
   void unwatchAdvertisements();
   readonly attribute boolean watchingAdvertisements;
 };
-BluetoothDevice implements EventTarget;
 BluetoothDevice implements BluetoothDeviceEventHandlers;
 BluetoothDevice implements CharacteristicEventHandlers;
 BluetoothDevice implements ServiceEventHandlers;
@@ -147,7 +157,7 @@ <h1>WebBluetooth IDL tests</h1>
     getPrimaryServices(optional BluetoothServiceUUID service);
 };
 
-interface BluetoothRemoteGATTService {
+interface BluetoothRemoteGATTService : EventTarget {
   readonly attribute BluetoothDevice device;
   readonly attribute UUID uuid;
   readonly attribute boolean isPrimary;
@@ -160,11 +170,10 @@ <h1>WebBluetooth IDL tests</h1>
   Promise<sequence<BluetoothRemoteGATTService>>
     getIncludedServices(optional BluetoothServiceUUID service);
 };
-BluetoothRemoteGATTService implements EventTarget;
 BluetoothRemoteGATTService implements CharacteristicEventHandlers;
 BluetoothRemoteGATTService implements ServiceEventHandlers;
 
-interface BluetoothRemoteGATTCharacteristic {
+interface BluetoothRemoteGATTCharacteristic : EventTarget {
   readonly attribute BluetoothRemoteGATTService service;
   readonly attribute UUID uuid;
   readonly attribute BluetoothCharacteristicProperties properties;
@@ -177,7 +186,6 @@ <h1>WebBluetooth IDL tests</h1>
   Promise<BluetoothRemoteGATTCharacteristic> startNotifications();
   Promise<BluetoothRemoteGATTCharacteristic> stopNotifications();
 };
-BluetoothRemoteGATTCharacteristic implements EventTarget;
 BluetoothRemoteGATTCharacteristic implements CharacteristicEventHandlers;
 
 interface BluetoothCharacteristicProperties {