diff --git a/package.json b/package.json
index 82dbf14..ccae3b4 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
   "dependencies": {
     "@polkadot/api": "^6.4.2",
     "@polkadot/types": "^6.4.2",
-    "@polkadot/util": "^6.6.1",
+    "@polkadot/util": "^10.3.1",
     "commander": "^8.3.0"
   }
 }