diff --git a/package-lock.json b/package-lock.json
index 1f6280c..4563f7b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -358,6 +358,10 @@
 						"readable-stream": "^3.0.6",
 						"xtend": "^4.0.0"
 					}
+				},
+				"webcrypto-shim": {
+					"version": "github:dignifiedquire/webcrypto-shim#190bc9ec341375df6025b17ae12ddb2428ea49c8",
+					"from": "github:dignifiedquire/webcrypto-shim#master"
 				}
 			}
 		},
@@ -1764,6 +1768,14 @@
 				"ethereumjs-util": "^5.1.1"
 			},
 			"dependencies": {
+				"ethereumjs-abi": {
+					"version": "git+https://github.com/ethereumjs/ethereumjs-abi.git#d84a96796079c8595a0c78accd1e7709f2277215",
+					"from": "git+https://github.com/ethereumjs/ethereumjs-abi.git",
+					"requires": {
+						"bn.js": "^4.10.0",
+						"ethereumjs-util": "^5.0.0"
+					}
+				},
 				"ethereumjs-util": {
 					"version": "5.2.0",
 					"resolved": "https://registry.npmjs.org/ethereumjs-util/-/ethereumjs-util-5.2.0.tgz",
@@ -1837,30 +1849,6 @@
 			"resolved": "https://registry.npmjs.org/ethereum-ens-network-map/-/ethereum-ens-network-map-1.0.0.tgz",
 			"integrity": "sha1-Q812ac6VCnieFRABEY1NZfIQ7rc="
 		},
-		"ethereumjs-abi": {
-			"version": "git+https://github.com/ethereumjs/ethereumjs-abi.git#d84a96796079c8595a0c78accd1e7709f2277215",
-			"from": "git+https://github.com/ethereumjs/ethereumjs-abi.git",
-			"requires": {
-				"bn.js": "^4.10.0",
-				"ethereumjs-util": "^5.0.0"
-			},
-			"dependencies": {
-				"ethereumjs-util": {
-					"version": "5.2.0",
-					"resolved": "https://registry.npmjs.org/ethereumjs-util/-/ethereumjs-util-5.2.0.tgz",
-					"integrity": "sha512-CJAKdI0wgMbQFLlLRtZKGcy/L6pzVRgelIZqRqNbuVFM3K9VEnyfbcvz0ncWMRNCe4kaHWjwRYQcYMucmwsnWA==",
-					"requires": {
-						"bn.js": "^4.11.0",
-						"create-hash": "^1.1.2",
-						"ethjs-util": "^0.1.3",
-						"keccak": "^1.0.2",
-						"rlp": "^2.0.0",
-						"safe-buffer": "^5.1.1",
-						"secp256k1": "^3.0.1"
-					}
-				}
-			}
-		},
 		"ethereumjs-account": {
 			"version": "2.0.5",
 			"resolved": "https://registry.npmjs.org/ethereumjs-account/-/ethereumjs-account-2.0.5.tgz",
@@ -2226,27 +2214,9 @@
 			"integrity": "sha1-Hxik2TgVLUlZZfnJWNkjqy3WabQ="
 		},
 		"follow-redirects": {
-			"version": "1.6.1",
-			"resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.6.1.tgz",
-			"integrity": "sha512-t2JCjbzxQpWvbhts3l6SH1DKzSrx8a+SsaVf4h6bG4kOXUuPYS/kg2Lr4gQSb7eemaHqJkOThF1BGyjlUkO1GQ==",
-			"requires": {
-				"debug": "=3.1.0"
-			},
-			"dependencies": {
-				"debug": {
-					"version": "3.1.0",
-					"resolved": "https://registry.npmjs.org/debug/-/debug-3.1.0.tgz",
-					"integrity": "sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==",
-					"requires": {
-						"ms": "2.0.0"
-					}
-				},
-				"ms": {
-					"version": "2.0.0",
-					"resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
-					"integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
-				}
-			}
+			"version": "1.14.8",
+			"resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.14.8.tgz",
+			"integrity": "sha512-1x0S9UVJHsQprFcEC/qnNzBLcIxsjAV905f/UkQxbclCsoTWlacCNOpQa/anodLl2uaEKFhfWOvM2Qg77+15zA=="
 		},
 		"for-each": {
 			"version": "0.3.3",
@@ -3065,6 +3035,12 @@
 				"rsa-pem-to-jwk": "^1.1.3",
 				"tweetnacl": "^1.0.0",
 				"webcrypto-shim": "github:dignifiedquire/webcrypto-shim#190bc9ec341375df6025b17ae12ddb2428ea49c8"
+			},
+			"dependencies": {
+				"webcrypto-shim": {
+					"version": "github:dignifiedquire/webcrypto-shim#190bc9ec341375df6025b17ae12ddb2428ea49c8",
+					"from": "github:dignifiedquire/webcrypto-shim#master"
+				}
 			}
 		},
 		"libp2p-crypto-secp256k1": {
@@ -4522,6 +4498,12 @@
 						"utf8": "^2.1.1",
 						"xhr2-cookies": "^1.1.0",
 						"xmlhttprequest": "*"
+					},
+					"dependencies": {
+						"bignumber.js": {
+							"version": "git+https://github.com/frozeman/bignumber.js-nolookahead.git#57692b3ecfc98bbdd6b3a516cb2353652ea49934",
+							"from": "git+https://github.com/frozeman/bignumber.js-nolookahead.git#57692b3ecfc98bbdd6b3a516cb2353652ea49934"
+						}
 					}
 				},
 				"web3-provider-engine": {
@@ -4701,14 +4683,16 @@
 						"crypto-js": "^3.1.4",
 						"utf8": "^2.1.1",
 						"xmlhttprequest": "*"
+					},
+					"dependencies": {
+						"bignumber.js": {
+							"version": "git+https://github.com/debris/bignumber.js.git#c7a38de919ed75e6fb6ba38051986e294b328df9",
+							"from": "git+https://github.com/debris/bignumber.js.git#c7a38de919ed75e6fb6ba38051986e294b328df9"
+						}
 					}
 				}
 			}
 		},
-		"webcrypto-shim": {
-			"version": "github:dignifiedquire/webcrypto-shim#190bc9ec341375df6025b17ae12ddb2428ea49c8",
-			"from": "github:dignifiedquire/webcrypto-shim#master"
-		},
 		"whatwg-fetch": {
 			"version": "3.0.0",
 			"resolved": "https://registry.npmjs.org/whatwg-fetch/-/whatwg-fetch-3.0.0.tgz",