diff --git a/package.json b/package.json
index 47bd93f..82ade24 100644
--- a/package.json
+++ b/package.json
@@ -152,7 +152,7 @@
     "stream-to-it": "^0.2.2"
   },
   "devDependencies": {
-    "@libp2p/interface-mocks": "^8.0.1",
+    "@libp2p/interface-mocks": "^9.1.1",
     "@libp2p/interface-transport-compliance-tests": "^3.0.0",
     "aegir": "^37.7.3",
     "it-all": "^2.0.0",