diff --git a/package-lock.json b/package-lock.json
index e67123d..4d8eb85 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -139,23 +139,23 @@
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-      "resolved": "https://registry.npmjs.org/@babel/polyfill/-/polyfill-7.8.3.tgz",
-      "integrity": "sha512-0QEgn2zkCzqGIkSWWAEmvxD7e00Nm9asTtQvi7HdlYvMhjy/J38V/1Y9ode0zEJeIuxAI0uftiAzqc7nVeWUGg==",
+      "version": "7.12.1",
+      "resolved": "https://registry.npmjs.org/@babel/polyfill/-/polyfill-7.12.1.tgz",
+      "integrity": "sha512-X0pi0V6gxLi6lFZpGmeNa4zxtwEmCs42isWLNjZZDE0Y8yVfgu0T2OAHlzBbdYlqbW/YXVvoBHpATEM+goCj8g==",
       "requires": {
         "core-js": "^2.6.5",
-        "regenerator-runtime": "^0.13.2"
+        "regenerator-runtime": "^0.13.4"
       },
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         "core-js": {
-          "version": "2.6.11",
-          "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.6.11.tgz",
-          "integrity": "sha512-5wjnpaT/3dV+XB4borEsnAYQchn00XSgTAWKDkEqv+K8KevjbzmofK6hfJ9TZIlpj2N0xQpazy7PiRQiWHqzWg=="
+          "version": "2.6.12",
+          "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.6.12.tgz",
+          "integrity": "sha512-Kb2wC0fvsWfQrgk8HU5lW6U/Lcs8+9aaYcy4ZFc6DDlo4nZ7n70dEgE5rtR0oG6ufKDUnrwfWL1mXR5ljDatrQ=="
         },
         "regenerator-runtime": {
-          "version": "0.13.3",
-          "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.13.3.tgz",
-          "integrity": "sha512-naKIZz2GQ8JWh///G7L3X6LaQUAMp2lvb1rvwwsURe/VXwD6VMfr+/1NuNw3ag8v2kY1aQ/go5SNn79O9JU7yw=="
+          "version": "0.13.9",
+          "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.13.9.tgz",
+          "integrity": "sha512-p3VT+cOEgxFsRRA9X4lkI1E+k2/CtnKtU4gcxyaCUreilL/vqI6CdZ3wxVUx3UOUg+gnUOQQcRI7BmSI656MYA=="
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@@ -22375,9 +22375,9 @@
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-      "version": "0.7.8",
-      "resolved": "https://registry.npmjs.org/shelljs/-/shelljs-0.7.8.tgz",
-      "integrity": "sha1-3svPh0sNHl+3LhSxZKloMEjprLM=",
+      "version": "0.8.5",
+      "resolved": "https://registry.npmjs.org/shelljs/-/shelljs-0.8.5.tgz",
+      "integrity": "sha512-TiwcRcrkhHvbrZbnRcFYMLl30Dfov3HKqzp5tO5b4pt6G/SezKcYhmDg15zXVBswHmctSAQKznqNW2LO5tTDow==",
       "dev": true,
       "requires": {
         "glob": "^7.0.0",
@@ -25884,10 +25884,26 @@
         "websocket": "github:web3-js/WebSocket-Node#polyfill/globalThis"
       },
       "dependencies": {
+        "nan": {
+          "version": "2.15.0",
+          "resolved": "https://registry.npmjs.org/nan/-/nan-2.15.0.tgz",
+          "integrity": "sha512-8ZtvEnA2c5aYCZYd1cvgdnU6cqwixRoYg70xPLWUws5ORTa/lnw+u4amixRS/Ac5U5mQVgp9pnlSUnbNWFaWZQ=="
+        },
         "underscore": {
           "version": "1.9.1",
           "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.9.1.tgz",
           "integrity": "sha512-5/4etnCkd9c8gwgowi5/om/mYO5ajCaOgdzj/oW+0eQV9WxKBDZw5+ycmKmeaTXjInS/W0BzpGLo2xR2aBwZdg=="
+        },
+        "websocket": {
+          "version": "github:web3-js/WebSocket-Node#ef5ea2f41daf4a2113b80c9223df884b4d56c400",
+          "from": "github:web3-js/WebSocket-Node#polyfill/globalThis",
+          "requires": {
+            "debug": "^2.2.0",
+            "es5-ext": "^0.10.50",
+            "nan": "^2.14.0",
+            "typedarray-to-buffer": "^3.1.5",
+            "yaeti": "^0.0.6"
+          }
         }
       }
     },
@@ -26514,6 +26530,7 @@
     "websocket": {
       "version": "1.0.29",
       "resolved": "github:web3-js/WebSocket-Node#905deb4812572b344f5801f8c9ce8bb02799d82e",
+      "dev": true,
       "requires": {
         "debug": "^2.2.0",
         "es5-ext": "^0.10.50",
@@ -26525,7 +26542,8 @@
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           "version": "2.14.0",
           "resolved": "https://registry.npmjs.org/nan/-/nan-2.14.0.tgz",
-          "integrity": "sha512-INOFj37C7k3AfaNTtX8RhsTw7qRy7eLET14cROi9+5HAVbbHuIWUHEauBv5qT4Av2tWasiTY1Jw6puUNqRJXQg=="
+          "integrity": "sha512-INOFj37C7k3AfaNTtX8RhsTw7qRy7eLET14cROi9+5HAVbbHuIWUHEauBv5qT4Av2tWasiTY1Jw6puUNqRJXQg==",
+          "dev": true
         }
       }
     },
diff --git a/package.json b/package.json
index 3557de7..bd29cfd 100644
--- a/package.json
+++ b/package.json
@@ -101,7 +101,7 @@
     "sass-loader": "^6.0.6",
     "selenium-server": "^3.0.1",
     "semver": "^5.3.0",
-    "shelljs": "^0.7.6",
+    "shelljs": "^0.8.5",
     "sinon": "^2.1.0",
     "sinon-chai": "^2.8.0",
     "truffle-hdwallet-provider": "^1.0.17",