diff --git a/package.json b/package.json
index dbe4f0c..660f37d 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
   "dependencies": {
     "async": "^2.6.0",
     "cids": "~0.5.2",
-    "multicodec": "~0.2.5",
+    "multicodec": "~0.4.0",
     "multihashes": "~0.4.12",
     "multihashing-async": "~0.5.1",
     "smart-buffer": "^4.0.0",