diff --git a/packages/interface-blockstore/package.json b/packages/interface-blockstore/package.json
index 929c1d42..dc24fb22 100644
--- a/packages/interface-blockstore/package.json
+++ b/packages/interface-blockstore/package.json
@@ -22,7 +22,7 @@
     "it-drain": "^1.0.4",
     "it-filter": "^1.0.2",
     "it-take": "^1.0.1",
-    "multiformats": "^8.0.5"
+    "multiformats": "^9.0.4"
   },
   "devDependencies": {
     "aegir": "^33.1.2"