diff --git a/package.json b/package.json
index 3876d14..5d9c4d2 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
     "node": ">=10.15.1"
   },
   "dependencies": {
-    "@psf/bch-js": "^3.7.1",
+    "@psf/bch-js": "^4.0.0",
     "apidoc": "^0.23.0",
     "axios": "^0.19.0",
     "bitcore-lib-cash": "^8.20.3",