diff --git a/package.json b/package.json
index af497d1..777f440 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
     "@substrate-system/json-canon": "^0.1.3",
     "@substrate-system/keys": "^0.2.43",
     "@substrate-system/one-webcrypto": "^1.1.3",
-    "uint8arrays": "^5.1.1"
+    "uint8arrays": "^6.1.1"
   },
   "devDependencies": {
     "@substrate-system/tapout": "^0.0.41",