diff --git a/.aegir.js b/.aegir.js
index 54329933be..2e8780e35f 100644
--- a/.aegir.js
+++ b/.aegir.js
@@ -1,6 +1,7 @@
 import { multiaddr } from '@multiformats/multiaddr'
 import { mockRegistrar, mockUpgrader } from '@libp2p/interface-mocks'
 import { pipe }from 'it-pipe'
+import { EventEmitter } from '@libp2p/interfaces/events'
 
 /** @type {import('aegir/types').PartialOptions} */
 export default {
@@ -17,7 +18,8 @@ export default {
         )
       })
       const upgrader = mockUpgrader({
-        registrar
+        registrar,
+        events: new EventEmitter()
       })
 
       const ws = webSockets()()
diff --git a/package.json b/package.json
index fccb1e8319..482dc45bb8 100644
--- a/package.json
+++ b/package.json
@@ -160,7 +160,7 @@
   },
   "dependencies": {
     "@libp2p/interface-connection": "^5.0.0",
-    "@libp2p/interface-transport": "^3.0.0",
+    "@libp2p/interface-transport": "^4.0.0",
     "@libp2p/interfaces": "^3.0.3",
     "@libp2p/logger": "^2.0.0",
     "@libp2p/utils": "^3.0.2",
@@ -175,8 +175,8 @@
     "ws": "^8.12.1"
   },
   "devDependencies": {
-    "@libp2p/interface-mocks": "^10.0.0",
-    "@libp2p/interface-transport-compliance-tests": "^3.0.0",
+    "@libp2p/interface-mocks": "^11.0.0",
+    "@libp2p/interface-transport-compliance-tests": "^4.0.0",
     "@types/ws": "^8.2.2",
     "aegir": "^38.1.7",
     "is-loopback-addr": "^2.0.1",
diff --git a/test/browser.ts b/test/browser.ts
index 7d2e5054f8..ed5158017d 100644
--- a/test/browser.ts
+++ b/test/browser.ts
@@ -10,6 +10,7 @@ import { mockUpgrader } from '@libp2p/interface-mocks'
 import { isBrowser, isWebWorker } from 'wherearewe'
 import type { Connection } from '@libp2p/interface-connection'
 import type { Transport } from '@libp2p/interface-transport'
+import { EventEmitter } from '@libp2p/interfaces/events'
 
 const protocol = '/echo/1.0.0'
 
@@ -20,7 +21,11 @@ describe('libp2p-websockets', () => {
 
   beforeEach(async () => {
     ws = webSockets()()
-    conn = await ws.dial(ma, { upgrader: mockUpgrader() })
+    conn = await ws.dial(ma, {
+      upgrader: mockUpgrader({
+        events: new EventEmitter()
+      })
+    })
   })
 
   afterEach(async () => {
diff --git a/test/node.ts b/test/node.ts
index 5de5846aec..56ef415655 100644
--- a/test/node.ts
+++ b/test/node.ts
@@ -21,6 +21,7 @@ import type { Listener, Transport } from '@libp2p/interface-transport'
 import type { Uint8ArrayList } from 'uint8arraylist'
 import type { Source } from 'it-stream-types'
 import './compliance.node.js'
+import { EventEmitter } from '@libp2p/interfaces/events'
 
 async function * toBuffers (source: Source<Uint8ArrayList>): AsyncGenerator<Uint8Array, void, undefined> {
   for await (const list of source) {
@@ -39,7 +40,8 @@ void registrar.handle(protocol, (evt) => {
   )
 })
 const upgrader = mockUpgrader({
-  registrar
+  registrar,
+  events: new EventEmitter()
 })
 
 describe('instantiate the transport', () => {