diff --git a/package.json b/package.json
index 61d5810..ebf7797 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "bech32": "^1.1.3",
     "bignumber.js": "^5.0.0",
     "bip39": "^2.5.0",
-    "bn": "git+https://github.com/shineabel/bn.git",
+    "bn": "git+https://github.com/irisnet/bn.js.git#v4.12.0",
     "create-hmac": "^1.1.7",
     "ethereumjs-tx": "^1.3.0",
     "ethereumjs-util": "^5.1.2",