diff --git a/package-lock.json b/package-lock.json
index 5f601e1..0362086 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -59,6 +59,16 @@
         "pbkdf2": "^3.0.17",
         "scrypt-shim": "github:web3-js/scrypt-shim#be5e616323a8b5e568788bf94d03c1b8410eac54",
         "uuid": "^3.3.2"
+      },
+      "dependencies": {
+        "scrypt-shim": {
+          "version": "github:web3-js/scrypt-shim#be5e616323a8b5e568788bf94d03c1b8410eac54",
+          "from": "github:web3-js/scrypt-shim",
+          "requires": {
+            "scryptsy": "^2.1.0",
+            "semver": "^6.3.0"
+          }
+        }
       }
     },
     "@harmony-js/network": {
@@ -262,17 +272,24 @@
       }
     },
     "elliptic": {
-      "version": "6.5.2",
-      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.2.tgz",
-      "integrity": "sha512-f4x70okzZbIQl/NSRLkI/+tteV/9WqL98zx+SQ69KbXxmVrmjwsNUPn/gYJJ0sHvEak24cZgHIPegRePAtA/xw==",
+      "version": "6.5.4",
+      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.4.tgz",
+      "integrity": "sha512-iLhC6ULemrljPZb+QutR5TQGB+pdW6KGD5RSegS+8sorOZT+rdQFbsQFJgvN3eRqNALqJer4oQ16YvJHlU8hzQ==",
       "requires": {
-        "bn.js": "^4.4.0",
-        "brorand": "^1.0.1",
+        "bn.js": "^4.11.9",
+        "brorand": "^1.1.0",
         "hash.js": "^1.0.0",
-        "hmac-drbg": "^1.0.0",
-        "inherits": "^2.0.1",
-        "minimalistic-assert": "^1.0.0",
-        "minimalistic-crypto-utils": "^1.0.0"
+        "hmac-drbg": "^1.0.1",
+        "inherits": "^2.0.4",
+        "minimalistic-assert": "^1.0.1",
+        "minimalistic-crypto-utils": "^1.0.1"
+      },
+      "dependencies": {
+        "bn.js": {
+          "version": "4.12.0",
+          "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.12.0.tgz",
+          "integrity": "sha512-c98Bf3tPniI+scsdk237ku1Dc3ujXQTSgyiPUDEOe7tRkhrqridvh8klBv0HCEso1OLOYcHuCv/cS6DNxKH+ZA=="
+        }
       }
     },
     "es5-ext": {
@@ -470,14 +487,6 @@
       "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.0.tgz",
       "integrity": "sha512-fZEwUGbVl7kouZs1jCdMLdt95hdIv0ZeHg6L7qPeciMZhZ+/gdesW4wgTARkrFWEpspjEATAzUGPG8N2jJiwbg=="
     },
-    "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",