diff --git a/integration-tests/package-lock.json b/integration-tests/package-lock.json
index c27114a..d929b30 100644
--- a/integration-tests/package-lock.json
+++ b/integration-tests/package-lock.json
@@ -2654,9 +2654,12 @@
       }
     },
     "node-fetch": {
-      "version": "2.6.0",
-      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.0.tgz",
-      "integrity": "sha512-8dG4H5ujfvFiqDmVu9fQ5bOHUC15JMjMY/Zumv26oOvvVJjM67KF8koCWIabKQ1GJIa9r2mMZscBq/TbdOcmNA=="
+      "version": "2.6.7",
+      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.7.tgz",
+      "integrity": "sha512-ZjMPFEfVx5j+y2yF35Kzx5sF7kDzxuDj6ziH4FFbOp87zKDZNx8yExJIb05OGF4Nlt9IHFIMBkRl41VdvcNdbQ==",
+      "requires": {
+        "whatwg-url": "^5.0.0"
+      }
     },
     "normalize-package-data": {
       "version": "2.5.0",
@@ -3951,6 +3954,11 @@
         "punycode": "^2.1.1"
       }
     },
+    "tr46": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-0.0.3.tgz",
+      "integrity": "sha512-N3WMsuqV66lT30CrXNbEjx4GEwlow3v6rr4mCcv6prnfwhS01rkgyFdjPNBYd9br7LpXV1+Emh01fHnq2Gdgrw=="
+    },
     "truffle": {
       "version": "5.0.21",
       "resolved": "https://registry.npmjs.org/truffle/-/truffle-5.0.21.tgz",
@@ -4567,7 +4575,7 @@
           "dependencies": {
             "websocket": {
               "version": "github:web3-js/WebSocket-Node#905deb4812572b344f5801f8c9ce8bb02799d82e",
-              "from": "github:web3-js/WebSocket-Node#polyfill/globalThis",
+              "from": "github:web3-js/WebSocket-Node#905deb4812572b344f5801f8c9ce8bb02799d82e",
               "requires": {
                 "debug": "^2.2.0",
                 "es5-ext": "^0.10.50",
@@ -5084,6 +5092,24 @@
           "resolved": "https://registry.npmjs.org/prepend-http/-/prepend-http-2.0.0.tgz",
           "integrity": "sha1-6SQ0v6XqjBn0HN/UAddBo8gZ2Jc="
         },
+        "scrypt-shim": {
+          "version": "github:web3-js/scrypt-shim#be5e616323a8b5e568788bf94d03c1b8410eac54",
+          "from": "github:web3-js/scrypt-shim",
+          "requires": {
+            "scryptsy": "^2.1.0",
+            "semver": "^6.3.0"
+          }
+        },
+        "scryptsy": {
+          "version": "2.1.0",
+          "resolved": "https://registry.npmjs.org/scryptsy/-/scryptsy-2.1.0.tgz",
+          "integrity": "sha512-1CdSqHQowJBnMAFyPEBRfqag/YP9OF394FV+4YREIJX4ljD7OxvQRDayyoyyCk+senRjSkP6VnUNQmVQqB6g7w=="
+        },
+        "semver": {
+          "version": "6.3.0",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.0.tgz",
+          "integrity": "sha512-b39TBaTSfV6yBrapU89p5fKekE2m/NwnDocOVruQFS1/veMgdzuPcnOM34M6CwxW8jH/lxEa5rBoDeUwu5HHTw=="
+        },
         "swarm-js": {
           "version": "0.1.39",
           "resolved": "https://registry.npmjs.org/swarm-js/-/swarm-js-0.1.39.tgz",
@@ -5426,6 +5452,19 @@
             "underscore": "1.9.1",
             "web3-core-helpers": "1.2.2",
             "websocket": "github:web3-js/WebSocket-Node#905deb4812572b344f5801f8c9ce8bb02799d82e"
+          },
+          "dependencies": {
+            "websocket": {
+              "version": "github:web3-js/WebSocket-Node#905deb4812572b344f5801f8c9ce8bb02799d82e",
+              "from": "github:web3-js/WebSocket-Node#905deb4812572b344f5801f8c9ce8bb02799d82e",
+              "requires": {
+                "debug": "^2.2.0",
+                "es5-ext": "^0.10.50",
+                "nan": "^2.14.0",
+                "typedarray-to-buffer": "^3.1.5",
+                "yaeti": "^0.0.6"
+              }
+            }
           }
         },
         "web3-shh": {
@@ -5746,6 +5785,26 @@
         "underscore": "1.8.3",
         "web3-core-helpers": "1.0.0-beta.36",
         "websocket": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "2.6.9",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
+          "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
+          "requires": {
+            "ms": "2.0.0"
+          }
+        },
+        "websocket": {
+          "version": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2",
+          "from": "git://github.com/frozeman/WebSocket-Node.git#browserifyCompatible",
+          "requires": {
+            "debug": "^2.2.0",
+            "nan": "^2.3.3",
+            "typedarray-to-buffer": "^3.1.2",
+            "yaeti": "^0.0.6"
+          }
+        }
       }
     },
     "web3-shh": {
@@ -5780,24 +5839,18 @@
         }
       }
     },
-    "websocket": {
-      "version": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2",
-      "from": "git://github.com/frozeman/WebSocket-Node.git#browserifyCompatible",
+    "webidl-conversions": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-3.0.1.tgz",
+      "integrity": "sha512-2JAn3z8AR6rjK8Sm8orRC0h/bcl/DqL7tRPdGZ4I1CjdF+EaMLmYxBHyXuKL849eucPFhvBoxMsflfOb8kxaeQ=="
+    },
+    "whatwg-url": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-5.0.0.tgz",
+      "integrity": "sha512-saE57nupxk6v3HY35+jzBwYa0rKSy0XR8JSxZPwgLr7ys0IBzhGviA1/TUGJLmSVqs8pb9AnvICXEuOHLprYTw==",
       "requires": {
-        "debug": "^2.2.0",
-        "nan": "^2.3.3",
-        "typedarray-to-buffer": "^3.1.2",
-        "yaeti": "^0.0.6"
-      },
-      "dependencies": {
-        "debug": {
-          "version": "2.6.9",
-          "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
-          "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
-          "requires": {
-            "ms": "2.0.0"
-          }
-        }
+        "tr46": "~0.0.3",
+        "webidl-conversions": "^3.0.0"
       }
     },
     "which": {
diff --git a/integration-tests/package.json b/integration-tests/package.json
index e3c4d3a..845e2cd 100644
--- a/integration-tests/package.json
+++ b/integration-tests/package.json
@@ -25,7 +25,7 @@
     "ganache-cli": "6.4.3",
     "hash.js": "1.1.7",
     "mocha": "6.1.4",
-    "node-fetch": "2.6.0",
+    "node-fetch": "2.6.7",
     "openzeppelin-solidity": "1.12.0",
     "quorum-js": "0.3.0",
     "scrypt-shim": "github:web3-js/scrypt-shim",