diff --git a/package-lock.json b/package-lock.json
index 5227f5d..c200089 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -14,7 +14,7 @@
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+        "es6-promisify": "5.0.0"
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@@ -31,10 +31,10 @@
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-        "fast-json-stable-stringify": "^2.0.0",
-        "json-schema-traverse": "^0.4.1",
-        "uri-js": "^4.2.2"
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+        "fast-json-stable-stringify": "2.0.0",
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-        "color-convert": "^1.9.0"
+        "color-convert": "1.9.3"
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@@ -67,8 +67,8 @@
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-        "delegates": "^1.0.0",
-        "readable-stream": "^2.0.6"
+        "delegates": "1.0.0",
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@@ -77,7 +77,7 @@
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       "dev": true,
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+        "sprintf-js": "1.0.3"
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@@ -90,7 +90,7 @@
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@@ -131,7 +131,7 @@
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@@ -145,7 +145,7 @@
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@@ -153,7 +153,7 @@
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-        "tweetnacl": "^0.14.3"
+        "tweetnacl": "0.14.5"
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@@ -185,12 +185,12 @@
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-        "create-hash": "^1.2.0",
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-        "tiny-secp256k1": "^1.1.0",
-        "typeforce": "^1.11.5",
-        "wif": "^2.0.6"
+        "bs58check": "2.1.2",
+        "create-hash": "1.2.0",
+        "create-hmac": "1.1.7",
+        "tiny-secp256k1": "1.1.3",
+        "typeforce": "1.18.0",
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-        "safe-buffer": "^5.0.1",
-        "unorm": "^1.3.3"
+        "create-hash": "1.2.0",
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+        "randombytes": "2.1.0",
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@@ -210,7 +210,7 @@
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@@ -223,9 +223,9 @@
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-        "make-concurrent": "^1.2.0",
-        "promise-useful-utils": "^0.2.0"
+        "babel-runtime": "5.8.38",
+        "make-concurrent": "1.2.0",
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@@ -234,21 +234,21 @@
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-        "bip174": "^1.0.1",
-        "bip32": "^2.0.4",
-        "bip66": "^1.1.0",
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-        "merkle-lib": "^2.0.10",
-        "pushdata-bitcoin": "^1.0.1",
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-        "typeforce": "^1.11.3",
-        "varuint-bitcoin": "^1.0.4",
-        "wif": "^2.0.1"
+        "bech32": "1.1.3",
+        "bip174": "1.0.1",
+        "bip32": "2.0.4",
+        "bip66": "1.1.5",
+        "bitcoin-ops": "1.4.1",
+        "bs58check": "2.1.2",
+        "create-hash": "1.2.0",
+        "create-hmac": "1.1.7",
+        "merkle-lib": "2.0.10",
+        "pushdata-bitcoin": "1.0.1",
+        "randombytes": "2.1.0",
+        "tiny-secp256k1": "1.1.3",
+        "typeforce": "1.18.0",
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-        "create-hash": "^1.1.2",
-        "secp256k1": "^3.0.1",
-        "varuint-bitcoin": "^1.0.1"
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+        "buffer-equals": "1.0.4",
+        "create-hash": "1.2.0",
+        "secp256k1": "3.7.1",
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+            "base-x": "1.1.0"
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@@ -281,8 +281,8 @@
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-            "bs58": "^3.1.0",
-            "create-hash": "^1.1.0"
+            "bs58": "3.1.0",
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@@ -292,8 +292,8 @@
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-        "readable-stream": "^2.3.5",
-        "safe-buffer": "^5.1.1"
+        "readable-stream": "2.3.6",
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@@ -307,15 +307,15 @@
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-        "content-type": "~1.0.4",
+        "content-type": "1.0.4",
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-        "depd": "~1.1.2",
-        "http-errors": "~1.6.3",
+        "depd": "1.1.2",
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+        "on-finished": "2.3.0",
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       "dev": true,
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@@ -344,12 +344,12 @@
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-        "evp_bytestokey": "^1.0.3",
-        "inherits": "^2.0.1",
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+        "buffer-xor": "1.0.3",
+        "cipher-base": "1.0.4",
+        "create-hash": "1.2.0",
+        "evp_bytestokey": "1.0.3",
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@@ -365,9 +365,9 @@
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-        "create-hash": "^1.1.0",
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+        "bs58": "4.0.1",
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-        "escape-string-regexp": "^1.0.5",
-        "supports-color": "^5.3.0"
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-        "strip-ansi": "^4.0.0",
-        "wrap-ansi": "^2.0.0"
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@@ -500,7 +500,7 @@
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-        "md5.js": "^1.3.4",
-        "ripemd160": "^2.0.1",
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+        "cipher-base": "1.0.4",
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+        "nice-try": "1.0.5",
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+        "semver": "5.7.1",
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+        "mimic-response": "1.0.1"
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