diff --git a/dapp/package-lock.json b/dapp/package-lock.json
index ce7aba1e..418e95d2 100644
--- a/dapp/package-lock.json
+++ b/dapp/package-lock.json
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@@ -11067,21 +11802,27 @@
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+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
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-          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
-          "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ="
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+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.5.tgz",
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@@ -11507,12 +12248,33 @@
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-      "resolved": "https://registry.npmjs.org/underscore.string/-/underscore.string-3.2.3.tgz",
-      "integrity": "sha1-gGmSYzZl1eX8tNsfs6hi62jp5to=",
+    "unbox-primitive": {
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+      "resolved": "https://registry.npmjs.org/unbox-primitive/-/unbox-primitive-1.0.1.tgz",
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+      "requires": {
+        "function-bind": "^1.1.1",
+        "has-bigints": "^1.0.1",
+        "has-symbols": "^1.0.2",
+        "which-boxed-primitive": "^1.0.2"
+      }
+    },
+    "unc-path-regex": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/unc-path-regex/-/unc-path-regex-0.1.2.tgz",
+      "integrity": "sha1-5z3T17DXxe2G+6xrCufYxqadUPo=",
       "dev": true
     },
+    "underscore.string": {
+      "version": "3.3.5",
+      "resolved": "https://registry.npmjs.org/underscore.string/-/underscore.string-3.3.5.tgz",
+      "integrity": "sha512-g+dpmgn+XBneLmXXo+sGlW5xQEt4ErkS3mgeN2GFbremYeMBSJKr9Wf2KJplQVaiPY/f7FN6atosWYNm9ovrYg==",
+      "dev": true,
+      "requires": {
+        "sprintf-js": "^1.0.3",
+        "util-deprecate": "^1.0.2"
+      }
+    },
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       "version": "0.4.6",
       "resolved": "https://registry.npmjs.org/union/-/union-0.4.6.tgz",
@@ -11820,6 +12582,15 @@
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       "integrity": "sha1-Z+LoY3lyFVMN/zGOW/nc6/1Hsho="
     },
+    "v8flags": {
+      "version": "3.1.3",
+      "resolved": "https://registry.npmjs.org/v8flags/-/v8flags-3.1.3.tgz",
+      "integrity": "sha512-amh9CCg3ZxkzQ48Mhcb8iX7xpAfYJgePHxWMQCBWECpOSqJUXgY26ncA61UTV0BkPqfhcy6mzwCIoP4ygxpW8w==",
+      "dev": true,
+      "requires": {
+        "homedir-polyfill": "^1.0.1"
+      }
+    },
     "validate-npm-package-license": {
       "version": "3.0.3",
       "resolved": "https://registry.npmjs.org/validate-npm-package-license/-/validate-npm-package-license-3.0.3.tgz",
@@ -11903,20 +12674,46 @@
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       },
       "dependencies": {
+        "elliptic": {
+          "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": "^4.11.9",
+            "brorand": "^1.1.0",
+            "hash.js": "^1.0.0",
+            "hmac-drbg": "^1.0.1",
+            "inherits": "^2.0.4",
+            "minimalistic-assert": "^1.0.1",
+            "minimalistic-crypto-utils": "^1.0.1"
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+          "dependencies": {
+            "bn.js": {
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+              "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.12.0.tgz",
+              "integrity": "sha512-c98Bf3tPniI+scsdk237ku1Dc3ujXQTSgyiPUDEOe7tRkhrqridvh8klBv0HCEso1OLOYcHuCv/cS6DNxKH+ZA=="
+            }
+          }
+        },
         "ethereumjs-util": {
-          "version": "5.2.0",
-          "resolved": "https://registry.npmjs.org/ethereumjs-util/-/ethereumjs-util-5.2.0.tgz",
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+          "version": "5.2.1",
+          "resolved": "https://registry.npmjs.org/ethereumjs-util/-/ethereumjs-util-5.2.1.tgz",
+          "integrity": "sha512-v3kT+7zdyCm1HIqWlLNrHGqHGLpGYIhjeHxQjnDXjLT2FyGJDsd3LWMYUo7pAFRrk86CR3nUJfhC81CCoJNNGQ==",
           "requires": {
             "bn.js": "^4.11.0",
             "create-hash": "^1.1.2",
+            "elliptic": "^6.5.2",
+            "ethereum-cryptography": "^0.1.3",
             "ethjs-util": "^0.1.3",
-            "keccak": "^1.0.2",
             "rlp": "^2.0.0",
-            "safe-buffer": "^5.1.1",
-            "secp256k1": "^3.0.1"
+            "safe-buffer": "^5.1.1"
           }
         },
+        "inherits": {
+          "version": "2.0.4",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+          "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="
+        },
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           "version": "0.18.4",
           "resolved": "https://registry.npmjs.org/web3/-/web3-0.18.4.tgz",
@@ -12040,6 +12837,18 @@
         "isexe": "^2.0.0"
       }
     },
+    "which-boxed-primitive": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/which-boxed-primitive/-/which-boxed-primitive-1.0.2.tgz",
+      "integrity": "sha512-bwZdv0AKLpplFY2KZRX6TvyuN7ojjr7lwkg6ml0roIy9YeuSr7JS372qlNW18UQYzgYK9ziGcerWqZOmEn9VNg==",
+      "requires": {
+        "is-bigint": "^1.0.1",
+        "is-boolean-object": "^1.1.0",
+        "is-number-object": "^1.0.4",
+        "is-string": "^1.0.5",
+        "is-symbol": "^1.0.3"
+      }
+    },
     "which-module": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/which-module/-/which-module-1.0.0.tgz",
@@ -12154,11 +12963,11 @@
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-      "resolved": "https://registry.npmjs.org/xhr/-/xhr-2.5.0.tgz",
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+      "version": "2.6.0",
+      "resolved": "https://registry.npmjs.org/xhr/-/xhr-2.6.0.tgz",
+      "integrity": "sha512-/eCGLb5rxjx5e3mF1A7s+pLlR6CGyqWN91fv1JgER5mVWg1MZmlhBvy9kjcsOdRk8RrIujotWyJamfyrp+WIcA==",
       "requires": {
-        "global": "~4.3.0",
+        "global": "~4.4.0",
         "is-function": "^1.0.1",
         "parse-headers": "^2.0.0",
         "xtend": "^4.0.0"
diff --git a/dapp/package.json b/dapp/package.json
index 55b184da..2ef762c1 100644
--- a/dapp/package.json
+++ b/dapp/package.json
@@ -93,7 +93,7 @@
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     "electron-packager": "8.7.2",
     "growl": "^1.10.5",
-    "grunt": "1.0.0",
+    "grunt": "1.3.0",
     "grunt-contrib-jshint": "1.1.0",
     "grunt-contrib-watch": "1.0.0",
     "grunt-eslint": "19.0.0",