diff --git a/lib/app.js b/lib/app.js
index 132d1fa..2ead507 100644
--- a/lib/app.js
+++ b/lib/app.js
@@ -141,16 +141,9 @@ class App {
   launchTestrpc() {
     return new Promise((resolve, reject) => {
       if (!this.norpc) {
-        let command;
-
         const defaultRpcOptions = `--gasLimit ${gasLimitHex} --accounts ${this.accounts} --port ${this.port}`;
         const options = this.testrpcOptions || defaultRpcOptions;
-        const npm = './node_modules/.bin/testrpc-sc';
-        const yarn = './node_modules/ethereumjs-testrpc-sc/build/cli.node.js';
-
-        shell.test('-e', yarn)
-          ? command = `${yarn} `
-          : command = `${npm} `;
+        const command = './node_modules/ethereumjs-testrpc-sc/build/cli.node.js ';
 
         // Launch
         const execOpts = {maxBuffer: 1024 * 1024 * 10};
diff --git a/package-lock.json b/package-lock.json
index 1925ef7..0f1fac8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -19,9 +19,9 @@
       }
     },
     "acorn": {
-      "version": "5.1.2",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.1.2.tgz",
-      "integrity": "sha512-o96FZLJBPY1lvTuJylGA9Bk3t/GKPPJG8H0ydQQl01crzwJgspa4AEIq/pVTXigmK0PHVQhiAtn8WMBLL9D2WA=="
+      "version": "5.2.1",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.2.1.tgz",
+      "integrity": "sha512-jG0u7c4Ly+3QkkW18V+NRDN+4bWHdln30NL1ZL2AvFZZmQe/BfopYCtghCKKVBUSetZ4QKcyA0pY6/4Gw8Pv8w=="
     },
     "acorn-dynamic-import": {
       "version": "2.0.2",
@@ -56,20 +56,20 @@
       }
     },
     "ajv": {
-      "version": "5.2.3",
-      "resolved": "https://registry.npmjs.org/ajv/-/ajv-5.2.3.tgz",
-      "integrity": "sha1-wG9Zh3jETGsWGrr+NGa4GtGBTtI=",
+      "version": "5.3.0",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-5.3.0.tgz",
+      "integrity": "sha1-RBT/dKUIecII7l/cgm4ywwNUnto=",
       "requires": {
         "co": "4.6.0",
         "fast-deep-equal": "1.0.0",
-        "json-schema-traverse": "0.3.1",
-        "json-stable-stringify": "1.0.1"
+        "fast-json-stable-stringify": "2.0.0",
+        "json-schema-traverse": "0.3.1"
       }
     },
     "ajv-keywords": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-2.1.0.tgz",
-      "integrity": "sha1-opbhf3v658HOT34N5T0pyzIWLfA="
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-2.1.1.tgz",
+      "integrity": "sha1-YXmX/F9gV2iUxDX5QNgZ4TW4B2I="
     },
     "align-text": {
       "version": "0.1.4",
@@ -182,9 +182,9 @@
       "dev": true
     },
     "asn1.js": {
-      "version": "4.9.1",
-      "resolved": "https://registry.npmjs.org/asn1.js/-/asn1.js-4.9.1.tgz",
-      "integrity": "sha1-SLokC0WpKA6UdImQull9IWYX/UA=",
+      "version": "4.9.2",
+      "resolved": "https://registry.npmjs.org/asn1.js/-/asn1.js-4.9.2.tgz",
+      "integrity": "sha512-b/OsSjvWEo8Pi8H0zsDd2P6Uqo2TK2pH8gNLSJtNLM2Db0v2QaAZ0pBQJXVjAn4gBuugeVDr7s63ZogpUIwWDg==",
       "requires": {
         "bn.js": "4.11.8",
         "inherits": "2.0.3",
@@ -278,7 +278,7 @@
         "lodash": "4.17.4",
         "minimatch": "3.0.4",
         "path-is-absolute": "1.0.1",
-        "private": "0.1.7",
+        "private": "0.1.8",
         "slash": "1.0.0",
         "source-map": "0.5.7"
       },
@@ -931,9 +931,9 @@
       "dev": true
     },
     "browserify-aes": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/browserify-aes/-/browserify-aes-1.1.0.tgz",
-      "integrity": "sha512-W2bIMLYoZ9oow7TyePpMJk9l9LY7O3R61a/68bVCDOtnJynnwe3ZeW2IzzSkrQnPKNdJrxVDn3ALZNisSBwb7g==",
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/browserify-aes/-/browserify-aes-1.1.1.tgz",
+      "integrity": "sha512-UGnTYAnB2a3YuYKIRy1/4FB2HdM866E0qC46JXvVTYKlBlZlnvfpSfY6OKfXZAkv70eJ2a1SqzpAo5CRhZGDFg==",
       "requires": {
         "buffer-xor": "1.0.3",
         "cipher-base": "1.0.4",
@@ -948,7 +948,7 @@
       "resolved": "https://registry.npmjs.org/browserify-cipher/-/browserify-cipher-1.0.0.tgz",
       "integrity": "sha1-mYgkSHS/XtTijalWZtzWasj8Njo=",
       "requires": {
-        "browserify-aes": "1.1.0",
+        "browserify-aes": "1.1.1",
         "browserify-des": "1.0.0",
         "evp_bytestokey": "1.0.3"
       }
@@ -1300,9 +1300,9 @@
       }
     },
     "crypto-browserify": {
-      "version": "3.11.1",
-      "resolved": "https://registry.npmjs.org/crypto-browserify/-/crypto-browserify-3.11.1.tgz",
-      "integrity": "sha512-Na7ZlwCOqoaW5RwUK1WpXws2kv8mNhWdTlzob0UXulk6G9BDbyiJaGTYBIX61Ozn9l1EPPJpICZb4DaOpT9NlQ==",
+      "version": "3.12.0",
+      "resolved": "https://registry.npmjs.org/crypto-browserify/-/crypto-browserify-3.12.0.tgz",
+      "integrity": "sha512-fz4spIh+znjO2VjL+IdhEpRJ3YN6sMzITSBijk6FK2UvTqruSQW+/cCZTSNsMiZNvUeq0CqurF+dAbyiGOY6Wg==",
       "requires": {
         "browserify-cipher": "1.0.0",
         "browserify-sign": "4.0.4",
@@ -1313,7 +1313,8 @@
         "inherits": "2.0.3",
         "pbkdf2": "3.0.14",
         "public-encrypt": "4.0.0",
-        "randombytes": "2.0.5"
+        "randombytes": "2.0.5",
+        "randomfill": "1.0.3"
       }
     },
     "crypto-js": {
@@ -1327,7 +1328,7 @@
       "resolved": "https://registry.npmjs.org/d/-/d-1.0.0.tgz",
       "integrity": "sha1-dUu1v+VUUdpppYuU1F9MWwRi1Y8=",
       "requires": {
-        "es5-ext": "0.10.31"
+        "es5-ext": "0.10.35"
       }
     },
     "dashdash": {
@@ -1463,7 +1464,7 @@
       "integrity": "sha1-Pja2xCs3BDgjzbwzLVjzHiRFSAs=",
       "dev": true,
       "requires": {
-        "browserify-aes": "1.1.0",
+        "browserify-aes": "1.1.1",
         "create-hash": "1.1.3",
         "create-hmac": "1.1.6"
       }
@@ -1534,21 +1535,21 @@
       }
     },
     "es5-ext": {
-      "version": "0.10.31",
-      "resolved": "https://registry.npmjs.org/es5-ext/-/es5-ext-0.10.31.tgz",
-      "integrity": "sha1-e7k4yVp/G59ygJLcCcQe3MOY7v4=",
+      "version": "0.10.35",
+      "resolved": "https://registry.npmjs.org/es5-ext/-/es5-ext-0.10.35.tgz",
+      "integrity": "sha1-GO6FjOajxFx9eekcFfzKnsVoSU8=",
       "requires": {
-        "es6-iterator": "2.0.1",
+        "es6-iterator": "2.0.3",
         "es6-symbol": "3.1.1"
       }
     },
     "es6-iterator": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/es6-iterator/-/es6-iterator-2.0.1.tgz",
-      "integrity": "sha1-jjGcnwRTv1ddN0lAplWSDlnKVRI=",
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/es6-iterator/-/es6-iterator-2.0.3.tgz",
+      "integrity": "sha1-p96IkUGgWpSwhUQDstCg+/qY87c=",
       "requires": {
         "d": "1.0.0",
-        "es5-ext": "0.10.31",
+        "es5-ext": "0.10.35",
         "es6-symbol": "3.1.1"
       }
     },
@@ -1558,8 +1559,8 @@
       "integrity": "sha1-kTbgUD3MBqMBaQ8LsU/042TpSfA=",
       "requires": {
         "d": "1.0.0",
-        "es5-ext": "0.10.31",
-        "es6-iterator": "2.0.1",
+        "es5-ext": "0.10.35",
+        "es6-iterator": "2.0.3",
         "es6-set": "0.1.5",
         "es6-symbol": "3.1.1",
         "event-emitter": "0.3.5"
@@ -1571,8 +1572,8 @@
       "integrity": "sha1-0rPsXU2ADO2BjbU40ol02wpzzLE=",
       "requires": {
         "d": "1.0.0",
-        "es5-ext": "0.10.31",
-        "es6-iterator": "2.0.1",
+        "es5-ext": "0.10.35",
+        "es6-iterator": "2.0.3",
         "es6-symbol": "3.1.1",
         "event-emitter": "0.3.5"
       }
@@ -1583,7 +1584,7 @@
       "integrity": "sha1-vwDvT9q2uhtG7Le2KbTH7VcVzHc=",
       "requires": {
         "d": "1.0.0",
-        "es5-ext": "0.10.31"
+        "es5-ext": "0.10.35"
       }
     },
     "es6-weak-map": {
@@ -1592,8 +1593,8 @@
       "integrity": "sha1-XjqzIlH/0VOKH45f+hNXdy+S2W8=",
       "requires": {
         "d": "1.0.0",
-        "es5-ext": "0.10.31",
-        "es6-iterator": "2.0.1",
+        "es5-ext": "0.10.35",
+        "es6-iterator": "2.0.3",
         "es6-symbol": "3.1.1"
       }
     },
@@ -1660,7 +1661,7 @@
         "file-entry-cache": "2.0.0",
         "glob": "7.1.2",
         "globals": "9.18.0",
-        "ignore": "3.3.5",
+        "ignore": "3.3.7",
         "imurmurhash": "0.1.4",
         "inquirer": "0.12.0",
         "is-my-json-valid": "2.16.1",
@@ -1716,7 +1717,7 @@
       "dev": true,
       "requires": {
         "debug": "2.6.9",
-        "resolve": "1.4.0"
+        "resolve": "1.5.0"
       },
       "dependencies": {
         "debug": {
@@ -1735,9 +1736,9 @@
           "dev": true
         },
         "resolve": {
-          "version": "1.4.0",
-          "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.4.0.tgz",
-          "integrity": "sha512-aW7sVKPufyHqOmyyLzg/J+8606v5nevBgaliIlV7nUpVMsDnoBGV/cbSLNjZAg9q0Cfd/+easKVKQ8vOu8fn1Q==",
+          "version": "1.5.0",
+          "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.5.0.tgz",
+          "integrity": "sha512-hgoSGrc3pjzAPHNBg+KnFcK2HwlHTs/YrAGUr6qgTVUZmXv1UEXXl0bZNBKMA9fud6lRYFdPGz0xXxycPzmmiw==",
           "dev": true,
           "requires": {
             "path-parse": "1.0.5"
@@ -1773,9 +1774,9 @@
       }
     },
     "eslint-plugin-import": {
-      "version": "2.7.0",
-      "resolved": "https://registry.npmjs.org/eslint-plugin-import/-/eslint-plugin-import-2.7.0.tgz",
-      "integrity": "sha512-HGYmpU9f/zJaQiKNQOVfHUh2oLWW3STBrCgH0sHTX1xtsxYlH1zjLh8FlQGEIdZSdTbUMaV36WaZ6ImXkenGxQ==",
+      "version": "2.8.0",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-import/-/eslint-plugin-import-2.8.0.tgz",
+      "integrity": "sha512-Rf7dfKJxZ16QuTgVv1OYNxkZcsu/hULFnC+e+w0Gzi6jMC3guQoWQgxYxc54IDRinlb6/0v5z/PxxIKmVctN+g==",
       "dev": true,
       "requires": {
         "builtin-modules": "1.1.1",
@@ -1838,7 +1839,7 @@
       "integrity": "sha1-DJiLirRttTEAoZVK5LqZXd0n2H4=",
       "dev": true,
       "requires": {
-        "acorn": "5.1.2",
+        "acorn": "5.2.1",
         "acorn-jsx": "3.0.1"
       }
     },
@@ -1907,51 +1908,32 @@
       }
     },
     "ethereumjs-block": {
-      "version": "1.2.2",
-      "resolved": "https://registry.npmjs.org/ethereumjs-block/-/ethereumjs-block-1.2.2.tgz",
-      "integrity": "sha1-LsdTSlkCG47JuDww5JaQxuuu3aE=",
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/ethereumjs-block/-/ethereumjs-block-1.7.0.tgz",
+      "integrity": "sha512-4s4Hh7mWa1xr+Bggh3T3jsq9lmje5aYpJRFky00bo/xNgNe+RC8V2ulWYSR4YTEKqLbnLEsLNytjDe5hpblkZQ==",
       "dev": true,
       "requires": {
-        "async": "1.5.2",
-        "ethereum-common": "0.0.16",
+        "async": "2.5.0",
+        "ethereum-common": "0.2.0",
         "ethereumjs-tx": "1.3.3",
-        "ethereumjs-util": "4.5.0",
+        "ethereumjs-util": "5.1.2",
         "merkle-patricia-tree": "2.1.2"
       },
       "dependencies": {
-        "async": {
-          "version": "1.5.2",
-          "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
-          "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=",
-          "dev": true
-        },
         "ethereum-common": {
-          "version": "0.0.16",
-          "resolved": "https://registry.npmjs.org/ethereum-common/-/ethereum-common-0.0.16.tgz",
-          "integrity": "sha1-mh4Wnq00q3XgifUMpRK/0PvRJlU=",
+          "version": "0.2.0",
+          "resolved": "https://registry.npmjs.org/ethereum-common/-/ethereum-common-0.2.0.tgz",
+          "integrity": "sha512-XOnAR/3rntJgbCdGhqdaLIxDLWKLmsZOGhHdBKadEr6gEnJLH52k93Ou+TUdFaPN3hJc3isBZBal3U/XZ15abA==",
           "dev": true
-        },
-        "ethereumjs-util": {
-          "version": "4.5.0",
-          "resolved": "https://registry.npmjs.org/ethereumjs-util/-/ethereumjs-util-4.5.0.tgz",
-          "integrity": "sha1-PpQosxfuvaPXJg2FT93alUsfG8Y=",
-          "dev": true,
-          "requires": {
-            "bn.js": "4.11.8",
-            "create-hash": "1.1.3",
-            "keccakjs": "0.2.1",
-            "rlp": "2.0.0",
-            "secp256k1": "3.3.0"
-          }
         }
       }
     },
     "ethereumjs-testrpc-sc": {
-      "version": "4.0.2",
-      "resolved": "https://registry.npmjs.org/ethereumjs-testrpc-sc/-/ethereumjs-testrpc-sc-4.0.2.tgz",
-      "integrity": "sha512-Gp/0/4cAH2g1rpcjiCngdxg7j6BKuFrvE1kWGSmnLjhRlbm1UW9/k923PbHKFIRP7oXMMio/lVeXAVsZZCEnrQ==",
+      "version": "6.0.3",
+      "resolved": "https://registry.npmjs.org/ethereumjs-testrpc-sc/-/ethereumjs-testrpc-sc-6.0.3.tgz",
+      "integrity": "sha512-TAKhGUnG1KSQ6ofGWzjduVpOrBCZbELsHzw46dpMyE3kVEcXCHT6nlVRj110shZvBfNmXocmxVqRWv1bEuhTFA==",
       "requires": {
-        "webpack": "3.7.1"
+        "webpack": "3.8.1"
       }
     },
     "ethereumjs-tx": {
@@ -1981,20 +1963,28 @@
       }
     },
     "ethereumjs-vm": {
-      "version": "git+https://github.com/sc-forks/ethereumjs-vm-sc.git#f4ebabe407f5f1e0e4314f291d8943de6822ebc7",
+      "version": "git+https://github.com/sc-forks/ethereumjs-vm-sc.git#a5f797299d0e96214af739be3bea4d0e15499c0d",
       "dev": true,
       "requires": {
         "async": "2.5.0",
         "async-eventemitter": "0.2.4",
-        "ethereum-common": "0.0.18",
+        "ethereum-common": "0.2.0",
         "ethereumjs-account": "2.0.4",
-        "ethereumjs-block": "1.2.2",
+        "ethereumjs-block": "1.7.0",
         "ethereumjs-util": "4.5.0",
         "fake-merkle-patricia-tree": "1.0.1",
         "functional-red-black-tree": "1.0.1",
-        "merkle-patricia-tree": "2.1.2"
+        "merkle-patricia-tree": "2.1.2",
+        "rustbn.js": "0.1.1",
+        "safe-buffer": "5.1.1"
       },
       "dependencies": {
+        "ethereum-common": {
+          "version": "0.2.0",
+          "resolved": "https://registry.npmjs.org/ethereum-common/-/ethereum-common-0.2.0.tgz",
+          "integrity": "sha512-XOnAR/3rntJgbCdGhqdaLIxDLWKLmsZOGhHdBKadEr6gEnJLH52k93Ou+TUdFaPN3hJc3isBZBal3U/XZ15abA==",
+          "dev": true
+        },
         "ethereumjs-util": {
           "version": "4.5.0",
           "resolved": "https://registry.npmjs.org/ethereumjs-util/-/ethereumjs-util-4.5.0.tgz",
@@ -2026,7 +2016,7 @@
       "integrity": "sha1-34xp7vFkeSPHFXuc6DhAYQsCzDk=",
       "requires": {
         "d": "1.0.0",
-        "es5-ext": "0.10.31"
+        "es5-ext": "0.10.35"
       }
     },
     "events": {
@@ -2119,6 +2109,11 @@
       "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-1.0.0.tgz",
       "integrity": "sha1-liVqO8l1WV6zbYLpkp0GDYk0Of8="
     },
+    "fast-json-stable-stringify": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/fast-json-stable-stringify/-/fast-json-stable-stringify-2.0.0.tgz",
+      "integrity": "sha1-1RQsDK7msRifh9OnYREGT4bIu/I="
+    },
     "fast-levenshtein": {
       "version": "2.0.6",
       "resolved": "https://registry.npmjs.org/fast-levenshtein/-/fast-levenshtein-2.0.6.tgz",
@@ -3185,9 +3180,9 @@
       "integrity": "sha1-Dqd0NxXbjY3ixe3hd14bRayFwC8="
     },
     "handlebars": {
-      "version": "4.0.10",
-      "resolved": "https://registry.npmjs.org/handlebars/-/handlebars-4.0.10.tgz",
-      "integrity": "sha1-PTDHGLCaPZbyPqTMH0A8TTup/08=",
+      "version": "4.0.11",
+      "resolved": "https://registry.npmjs.org/handlebars/-/handlebars-4.0.11.tgz",
+      "integrity": "sha1-Ywo13+ApS8KB7a5v/F0yn8eYLcw=",
       "requires": {
         "async": "1.5.2",
         "optimist": "0.6.1",
@@ -3222,7 +3217,7 @@
       "integrity": "sha1-ukAsJmGU8VlW7xXg/PJCmT9qff0=",
       "dev": true,
       "requires": {
-        "ajv": "5.2.3",
+        "ajv": "5.3.0",
         "har-schema": "2.0.0"
       }
     },
@@ -3281,7 +3276,7 @@
         "boom": "4.3.1",
         "cryptiles": "3.1.2",
         "hoek": "4.2.0",
-        "sntp": "2.0.2"
+        "sntp": "2.1.0"
       }
     },
     "he": {
@@ -3343,9 +3338,9 @@
       "integrity": "sha1-vjPUCsEO8ZJnAfbwii2G+/0a0+Q="
     },
     "ignore": {
-      "version": "3.3.5",
-      "resolved": "https://registry.npmjs.org/ignore/-/ignore-3.3.5.tgz",
-      "integrity": "sha512-JLH93mL8amZQhh/p6mfQgVBH3M6epNq3DfsXsTSuSrInVjwyYlFE1nv2AgfRCC8PoOhM0jwQ5v8s9LgbK7yGDw==",
+      "version": "3.3.7",
+      "resolved": "https://registry.npmjs.org/ignore/-/ignore-3.3.7.tgz",
+      "integrity": "sha512-YGG3ejvBNHRqu0559EOxxNFihD0AjpvHlC/pdGKd3X3ofe+CoJkYazwNJYTNebqpPKN+VVQbh4ZFn1DivMNuHA==",
       "dev": true
     },
     "immediate": {
@@ -3452,9 +3447,9 @@
       }
     },
     "is-buffer": {
-      "version": "1.1.5",
-      "resolved": "https://registry.npmjs.org/is-buffer/-/is-buffer-1.1.5.tgz",
-      "integrity": "sha1-Hzsm72E7IUuIy8ojzGwB2Hlh7sw="
+      "version": "1.1.6",
+      "resolved": "https://registry.npmjs.org/is-buffer/-/is-buffer-1.1.6.tgz",
+      "integrity": "sha512-NcdALwpXkTm5Zvvbk7owOUSvVvBKDgKP5/ewfXEznmQFfs4ZRmanOeKBTjRVjka3QFoN6XJ+9F3USqfHqTaU5w=="
     },
     "is-builtin-module": {
       "version": "1.0.0",
@@ -3637,7 +3632,7 @@
         "escodegen": "1.8.1",
         "esprima": "2.7.3",
         "glob": "5.0.15",
-        "handlebars": "4.0.10",
+        "handlebars": "4.0.11",
         "js-yaml": "3.10.0",
         "mkdirp": "0.5.1",
         "nopt": "3.0.6",
@@ -3754,6 +3749,7 @@
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/json-stable-stringify/-/json-stable-stringify-1.0.1.tgz",
       "integrity": "sha1-mnWdOcXy/1A/1TAGRu1EX4jE+a8=",
+      "dev": true,
       "requires": {
         "jsonify": "0.0.0"
       }
@@ -3787,7 +3783,8 @@
     "jsonify": {
       "version": "0.0.0",
       "resolved": "https://registry.npmjs.org/jsonify/-/jsonify-0.0.0.tgz",
-      "integrity": "sha1-LHS27kHZPKUbe1qu6PUDYx0lKnM="
+      "integrity": "sha1-LHS27kHZPKUbe1qu6PUDYx0lKnM=",
+      "dev": true
     },
     "jsonpointer": {
       "version": "4.0.1",
@@ -3834,7 +3831,7 @@
       "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-3.2.2.tgz",
       "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
       "requires": {
-        "is-buffer": "1.1.5"
+        "is-buffer": "1.1.6"
       }
     },
     "klaw": {
@@ -4432,10 +4429,13 @@
       "dev": true
     },
     "node-abi": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/node-abi/-/node-abi-2.1.1.tgz",
-      "integrity": "sha512-6oxV13poCOv7TfGvhsSz6XZWpXeKkdGVh72++cs33OfMh3KAX8lN84dCvmqSETyDXAFcUHtV7eJrgFBoOqZbNQ==",
-      "dev": true
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/node-abi/-/node-abi-2.1.2.tgz",
+      "integrity": "sha512-hmUtb8m75RSi7N+zZLYqe75XDvZB+6LyTBPkj2DConvNgQet2e3BIqEwe1LLvqMrfyjabuT5ZOrTioLCH1HTdA==",
+      "dev": true,
+      "requires": {
+        "semver": "5.4.1"
+      }
     },
     "node-libs-browser": {
       "version": "2.0.0",
@@ -4447,7 +4447,7 @@
         "buffer": "4.9.1",
         "console-browserify": "1.1.0",
         "constants-browserify": "1.0.0",
-        "crypto-browserify": "3.11.1",
+        "crypto-browserify": "3.12.0",
         "domain-browser": "1.1.7",
         "events": "1.1.1",
         "https-browserify": "0.0.1",
@@ -4662,8 +4662,8 @@
       "resolved": "https://registry.npmjs.org/parse-asn1/-/parse-asn1-5.1.0.tgz",
       "integrity": "sha1-N8T5t+06tlx0gXtfJICTf7+XxxI=",
       "requires": {
-        "asn1.js": "4.9.1",
-        "browserify-aes": "1.1.0",
+        "asn1.js": "4.9.2",
+        "browserify-aes": "1.1.1",
         "create-hash": "1.1.3",
         "evp_bytestokey": "1.0.3",
         "pbkdf2": "3.0.14"
@@ -4815,12 +4815,12 @@
         "github-from-package": "0.0.0",
         "minimist": "1.2.0",
         "mkdirp": "0.5.1",
-        "node-abi": "2.1.1",
+        "node-abi": "2.1.2",
         "noop-logger": "0.1.1",
         "npmlog": "4.1.2",
         "os-homedir": "1.0.2",
         "pump": "1.0.2",
-        "rc": "1.2.1",
+        "rc": "1.2.2",
         "simple-get": "1.4.3",
         "tar-fs": "1.16.0",
         "tunnel-agent": "0.6.0",
@@ -4846,9 +4846,9 @@
       "integrity": "sha1-gV7R9uvGWSb4ZbMQwHE7yzMVzks="
     },
     "private": {
-      "version": "0.1.7",
-      "resolved": "https://registry.npmjs.org/private/-/private-0.1.7.tgz",
-      "integrity": "sha1-aM5eih7woju1cMwoU3tTMqumPvE=",
+      "version": "0.1.8",
+      "resolved": "https://registry.npmjs.org/private/-/private-0.1.8.tgz",
+      "integrity": "sha512-VvivMrbvd2nKkiG38qjULzlc+4Vx4wm/whI9pQD35YrARNnhxeiRktSOhSukRLFNlzg6Br/cJPet5J/u19r/mg==",
       "dev": true
     },
     "process": {
@@ -4948,7 +4948,7 @@
               "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-3.2.2.tgz",
               "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
               "requires": {
-                "is-buffer": "1.1.5"
+                "is-buffer": "1.1.6"
               }
             }
           }
@@ -4958,7 +4958,7 @@
           "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-4.0.0.tgz",
           "integrity": "sha1-IIE989cSkosgc3hpGkUGb65y3Vc=",
           "requires": {
-            "is-buffer": "1.1.5"
+            "is-buffer": "1.1.6"
           }
         }
       }
@@ -4971,10 +4971,19 @@
         "safe-buffer": "5.1.1"
       }
     },
+    "randomfill": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/randomfill/-/randomfill-1.0.3.tgz",
+      "integrity": "sha512-YL6GrhrWoic0Eq8rXVbMptH7dAxCs0J+mh5Y0euNekPPYaxEmdVGim6GdoxoRzKW2yJoU8tueifS7mYxvcFDEQ==",
+      "requires": {
+        "randombytes": "2.0.5",
+        "safe-buffer": "5.1.1"
+      }
+    },
     "rc": {
-      "version": "1.2.1",
-      "resolved": "https://registry.npmjs.org/rc/-/rc-1.2.1.tgz",
-      "integrity": "sha1-LgPo5C7kULjLPc5lvhv4l04d/ZU=",
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/rc/-/rc-1.2.2.tgz",
+      "integrity": "sha1-2M6ctX6NZNnHut2YdsfDTL48cHc=",
       "dev": true,
       "requires": {
         "deep-extend": "0.4.2",
@@ -5074,7 +5083,7 @@
       "requires": {
         "babel-runtime": "6.26.0",
         "babel-types": "6.26.0",
-        "private": "0.1.7"
+        "private": "0.1.8"
       }
     },
     "regex-cache": {
@@ -5292,6 +5301,12 @@
         "once": "1.4.0"
       }
     },
+    "rustbn.js": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/rustbn.js/-/rustbn.js-0.1.1.tgz",
+      "integrity": "sha512-+Xq0RaL+HEErm4vaTUSWq8uq94OuzOu2UR16LowDvj/C8gclDsoYGp8hKpmakKW2dKqL433v2tkf8HCa2za+Eg==",
+      "dev": true
+    },
     "rx-lite": {
       "version": "3.1.2",
       "resolved": "https://registry.npmjs.org/rx-lite/-/rx-lite-3.1.2.tgz",
@@ -5435,9 +5450,9 @@
       "dev": true
     },
     "sntp": {
-      "version": "2.0.2",
-      "resolved": "https://registry.npmjs.org/sntp/-/sntp-2.0.2.tgz",
-      "integrity": "sha1-UGQRDwr4X3z9t9a2ekACjOUrSys=",
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/sntp/-/sntp-2.1.0.tgz",
+      "integrity": "sha512-FL1b58BDrqS3A11lJ0zEdnJ3UOKqVxawAkF3k7F0CVN7VQ34aZrV+G8BZ1WC9ZL7NyrwsW0oviwsWDgRuVYtJg==",
       "dev": true,
       "requires": {
         "hoek": "4.2.0"
@@ -5969,9 +5984,9 @@
       "dev": true
     },
     "supports-color": {
-      "version": "4.4.0",
-      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-4.4.0.tgz",
-      "integrity": "sha512-rKC3+DyXWgK0ZLKwmRsrkyHVZAjNkfzeehuFWdGGcqGDTZFH73+RH6S/RDAAxl9GusSjZSUWYLmT9N5pzXFOXQ==",
+      "version": "4.5.0",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-4.5.0.tgz",
+      "integrity": "sha1-vnoN5ITexcXN34s9WRJQRJEvY1s=",
       "requires": {
         "has-flag": "2.0.0"
       }
@@ -6176,7 +6191,7 @@
       "requires": {
         "source-map": "0.5.7",
         "uglify-js": "2.8.29",
-        "webpack-sources": "1.0.1"
+        "webpack-sources": "1.0.2"
       }
     },
     "unzip-response": {
@@ -6299,14 +6314,14 @@
       }
     },
     "webpack": {
-      "version": "3.7.1",
-      "resolved": "https://registry.npmjs.org/webpack/-/webpack-3.7.1.tgz",
-      "integrity": "sha512-8MR+gVfxsvtx4J1UlbRGkUJEpDQUBFmisRmpPO5cVLgF21R8UMChX39OOjDz63a+m/iswGoqATszdZB2VCsYuA==",
+      "version": "3.8.1",
+      "resolved": "https://registry.npmjs.org/webpack/-/webpack-3.8.1.tgz",
+      "integrity": "sha512-5ZXLWWsMqHKFr5y0N3Eo5IIisxeEeRAajNq4mELb/WELOR7srdbQk2N5XiyNy2A/AgvlR3AmeBCZJW8lHrolbw==",
       "requires": {
-        "acorn": "5.1.2",
+        "acorn": "5.2.1",
         "acorn-dynamic-import": "2.0.2",
-        "ajv": "5.2.3",
-        "ajv-keywords": "2.1.0",
+        "ajv": "5.3.0",
+        "ajv-keywords": "2.1.1",
         "async": "2.5.0",
         "enhanced-resolve": "3.4.1",
         "escope": "3.6.0",
@@ -6319,21 +6334,28 @@
         "mkdirp": "0.5.1",
         "node-libs-browser": "2.0.0",
         "source-map": "0.5.7",
-        "supports-color": "4.4.0",
+        "supports-color": "4.5.0",
         "tapable": "0.2.8",
         "uglifyjs-webpack-plugin": "0.4.6",
         "watchpack": "1.4.0",
-        "webpack-sources": "1.0.1",
+        "webpack-sources": "1.0.2",
         "yargs": "8.0.2"
       }
     },
     "webpack-sources": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/webpack-sources/-/webpack-sources-1.0.1.tgz",
-      "integrity": "sha512-05tMxipUCwHqYaVS8xc7sYPTly8PzXayRCB4dTxLhWTqlKUiwH6ezmEe0OSreL1c30LAuA3Zqmc+uEBUGFJDjw==",
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/webpack-sources/-/webpack-sources-1.0.2.tgz",
+      "integrity": "sha512-Y7UddMCv6dGjy81nBv6nuQeFFIt5aalHm7uyDsAsW86nZwfOVPGRr3XMjEQLaT+WKo8rlzhC9qtbJvYKLtAwaw==",
       "requires": {
         "source-list-map": "2.0.0",
-        "source-map": "0.5.7"
+        "source-map": "0.6.1"
+      },
+      "dependencies": {
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g=="
+        }
       }
     },
     "which": {
diff --git a/package.json b/package.json
index 8ba35c3..ceb446a 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
   "license": "ISC",
   "dependencies": {
     "death": "^1.1.0",
-    "ethereumjs-testrpc-sc": "4.0.2",
+    "ethereumjs-testrpc-sc": "6.0.3",
     "istanbul": "^0.4.5",
     "keccakjs": "^0.2.1",
     "req-cwd": "^1.0.1",
@@ -40,7 +40,7 @@
     "ethereumjs-account": "~2.0.4",
     "ethereumjs-tx": "^1.2.2",
     "ethereumjs-util": "^5.0.1",
-    "ethereumjs-vm": "https://github.com/sc-forks/ethereumjs-vm-sc.git",
+    "ethereumjs-vm": "https://github.com/sc-forks/ethereumjs-vm-sc.git#a5f797299d0e96214af739be3bea4d0e15499c0d",
     "merkle-patricia-tree": "~2.1.2",
     "mocha": "^3.1.0",
     "solc": "0.4.17",