diff --git a/package-lock.json b/package-lock.json
index b24480136..4decb301d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12687,46 +12687,37 @@
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           "integrity": "sha512-dcQ1GWpOD/eEQ97k66aiEVpNnapVj90/+R+SXTPYGHpYBBypfKJEQjLrvMZ7YXbKm21gXd4NcuxUTjiv1YtLng==",
           "dev": true
         },
@@ -18475,7 +18311,7 @@
         },
         "wrap-ansi": {
           "version": "2.1.0",
-          "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
+          "resolved": "http://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
           "integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
           "dev": true,
           "requires": {
@@ -18535,11 +18371,14 @@
             "xhr-request": "^1.0.1"
           }
         },
-        "xhr2": {
-          "version": "0.1.4",
-          "resolved": "https://registry.npmjs.org/xhr2/-/xhr2-0.1.4.tgz",
-          "integrity": "sha1-f4dliEdxbbUCYyOBL4GMras4el8=",
-          "dev": true
+        "xhr2-cookies": {
+          "version": "1.1.0",
+          "resolved": "https://registry.npmjs.org/xhr2-cookies/-/xhr2-cookies-1.1.0.tgz",
+          "integrity": "sha1-fXdEnQmZGX8VXLc7I99yUF7YnUg=",
+          "dev": true,
+          "requires": {
+            "cookiejar": "^2.1.1"
+          }
         },
         "xtend": {
           "version": "4.0.1",
@@ -18560,40 +18399,30 @@
           "dev": true
         },
         "yargs": {
-          "version": "7.1.0",
-          "resolved": "https://registry.npmjs.org/yargs/-/yargs-7.1.0.tgz",
-          "integrity": "sha1-a6MY6xaWFyf10oT46gA+jWFU0Mg=",
+          "version": "4.8.1",
+          "resolved": "http://registry.npmjs.org/yargs/-/yargs-4.8.1.tgz",
+          "integrity": "sha1-wMQpJMpKqmsObaFznfshZDn53cA=",
           "dev": true,
           "requires": {
-            "camelcase": "^3.0.0",
             "cliui": "^3.2.0",
             "decamelize": "^1.1.1",
             "get-caller-file": "^1.0.1",
+            "lodash.assign": "^4.0.3",
             "os-locale": "^1.4.0",
             "read-pkg-up": "^1.0.1",
             "require-directory": "^2.1.1",
             "require-main-filename": "^1.0.1",
             "set-blocking": "^2.0.0",
-            "string-width": "^1.0.2",
+            "string-width": "^1.0.1",
             "which-module": "^1.0.0",
+            "window-size": "^0.2.0",
             "y18n": "^3.2.1",
-            "yargs-parser": "^5.0.0"
-          },
-          "dependencies": {
-            "yargs-parser": {
-              "version": "5.0.0",
-              "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-5.0.0.tgz",
-              "integrity": "sha1-J17PDX/+Bcd+ZOfIbkzZS/DhIoo=",
-              "dev": true,
-              "requires": {
-                "camelcase": "^3.0.0"
-              }
-            }
+            "yargs-parser": "^2.4.1"
           }
         },
         "yargs-parser": {
           "version": "2.4.1",
-          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-2.4.1.tgz",
+          "resolved": "http://registry.npmjs.org/yargs-parser/-/yargs-parser-2.4.1.tgz",
           "integrity": "sha1-hVaN488VD/SfpRgl8DqMiA3cxcQ=",
           "dev": true,
           "requires": {
@@ -18602,13 +18431,14 @@
           }
         },
         "yauzl": {
-          "version": "2.9.1",
-          "resolved": "https://registry.npmjs.org/yauzl/-/yauzl-2.9.1.tgz",
-          "integrity": "sha1-qBmB6nCleUYTOIPwKcWCGok1mn8=",
+          "version": "2.10.0",
+          "resolved": "https://registry.npmjs.org/yauzl/-/yauzl-2.10.0.tgz",
+          "integrity": "sha1-x+sXyT4RLLEIb6bY5R+wZnt5pfk=",
           "dev": true,
+          "optional": true,
           "requires": {
             "buffer-crc32": "~0.2.3",
-            "fd-slicer": "~1.0.1"
+            "fd-slicer": "~1.1.0"
           }
         }
       }
diff --git a/package.json b/package.json
index 5600b5f37..c3b38a994 100644
--- a/package.json
+++ b/package.json
@@ -268,7 +268,7 @@
     "fs-extra": "^6.0.1",
     "fs-promise": "^2.0.3",
     "ganache-cli": "^6.1.0",
-    "ganache-core": "^2.2.1",
+    "ganache-core": "^2.3.1",
     "geckodriver": "^1.14.1",
     "gh-pages": "^1.2.0",
     "gifencoder": "^1.1.0",