diff --git a/package.json b/package.json
index 34dc4af..a0e1390 100644
--- a/package.json
+++ b/package.json
@@ -11,8 +11,11 @@
     "url": "https://github.com/MoneroOcean/node-cryptoforknote-util.git"
   },
   "dependencies": {
+    "promise":  "*",
     "bindings": "*",
-    "nan": "^2.0.0",
+    "nan":      "^2.0.0",
+    "bignum":   "^0.13.1",
+    "sha3":           "git+https://github.com/phusion/node-sha3.git#7b88fc1c559c06b7b236c81d87cccbe4c6e7acd4",
     "bitcoinjs-lib":  "git+https://github.com/bitcoinjs/bitcoinjs-lib.git#533d6c2e6d0aa4111f7948b1c12003cf6ef83137",
     "merkle-bitcoin": "git+https://github.com/joshuayabut/merkle-bitcoin.git#ec00ae20ba60d444e150ead03c747695ddaa83a1"
   },