diff --git a/package.json b/package.json
index 27257e9..957744b 100644
--- a/package.json
+++ b/package.json
@@ -53,7 +53,7 @@
     "it-length-prefixed": "^5.0.0",
     "it-pipe": "^1.0.1",
     "it-reader": "^3.0.0",
-    "p-defer": "^3.0.0",
+    "p-defer": "^4.0.0",
     "uint8arrays": "^3.0.0"
   },
   "devDependencies": {