diff --git a/package.json b/package.json
index 4a34f60..ab02ad2 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,7 @@
   },
   "devDependencies": {
     "aegir": "^13.0.5",
-    "bl": "^1.2.1",
+    "bl": "^4.0.3",
     "chai": "^4.1.2",
     "dirty-chai": "^2.0.1",
     "libp2p-tcp": "^0.11.6",