diff --git a/package.json b/package.json
index fcac748..404c730 100644
--- a/package.json
+++ b/package.json
@@ -58,15 +58,15 @@
   "dependencies": {
     "asn1.js": "0.4.1",
     "async": "~0.2.10",
-    "bignum": "=0.6.2",
-    "bindings": "=1.1.1",
+    "bignum": "^0.9.0",
     "binary": "^0.3.0",
+    "bindings": "=1.1.1",
     "bn.js": "=0.15.0",
     "brfs": "=1.0.0",
+    "browserify-buffertools": "git://github.com/maraoz/browserify-buffertools.git",
     "bufferput": "git://github.com/bitpay/node-bufferput.git",
     "buffers": "=0.1.1",
     "buffertools": "=2.1.2",
-    "browserify-buffertools": "git://github.com/maraoz/browserify-buffertools.git",
     "elliptic": "=0.15.12",
     "hash.js": "=0.3.2",
     "jsrsasign": "=0.0.3",