diff --git a/package-lock.json b/package-lock.json
index 87872d0b..f268e41b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -242,7 +242,7 @@
         },
         "acorn": {
             "version": "1.2.2",
-            "resolved": "http://registry.npmjs.org/acorn/-/acorn-1.2.2.tgz",
+            "resolved": "https://registry.npmjs.org/acorn/-/acorn-1.2.2.tgz",
             "integrity": "sha1-yM4n3grMdtiW0rH6099YjZ6C8BQ="
         },
         "acorn-dynamic-import": {
@@ -554,7 +554,7 @@
                 },
                 "chalk": {
                     "version": "1.1.3",
-                    "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+                    "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
                     "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
                     "requires": {
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@@ -2353,9 +2353,9 @@
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         },
         "elliptic": {
-            "version": "6.4.1",
-            "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.4.1.tgz",
-            "integrity": "sha512-BsXLz5sqX8OHcsh7CqBMztyXARmGQ3LWPtGjJi6DiJHq5C/qvi9P3OqgswKSDftbu8+IoI/QDTAm2fFnQ9SZSQ==",
+            "version": "6.5.3",
+            "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.3.tgz",
+            "integrity": "sha512-IMqzv5wNQf+E6aHeIqATs0tOLeOTwj1QKbRcS3jBbYkl5oLAserA8yJTT7/VyHUYG91PRmPyeQDObKLPpeS4dw==",
             "requires": {
                 "bn.js": "^4.4.0",
                 "brorand": "^1.0.1",
@@ -2943,7 +2943,8 @@
                 },
                 "ansi-regex": {
                     "version": "2.1.1",
-                    "bundled": true
+                    "bundled": true,
+                    "optional": true
                 },
                 "aproba": {
                     "version": "1.2.0",
@@ -3308,7 +3309,8 @@
                 },
                 "safe-buffer": {
                     "version": "5.1.1",
-                    "bundled": true
+                    "bundled": true,
+                    "optional": true
                 },
                 "safer-buffer": {
                     "version": "2.1.2",
@@ -3356,6 +3358,7 @@
                 "strip-ansi": {
                     "version": "3.0.1",
                     "bundled": true,
+                    "optional": true,
                     "requires": {
                         "ansi-regex": "2.1.1"
                     }
@@ -3394,11 +3397,13 @@
                 },
                 "wrappy": {
                     "version": "1.0.2",
-                    "bundled": true
+                    "bundled": true,
+                    "optional": true
                 },
                 "yallist": {
                     "version": "3.0.2",
-                    "bundled": true
+                    "bundled": true,
+                    "optional": true
                 }
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@@ -3714,7 +3719,7 @@
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         "http-errors": {
             "version": "1.6.3",
-            "resolved": "http://registry.npmjs.org/http-errors/-/http-errors-1.6.3.tgz",
+            "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.6.3.tgz",
             "integrity": "sha1-i1VoC7S+KDoLW/TqLjhYC+HZMg0=",
             "requires": {
                 "depd": "~1.1.2",
@@ -4334,7 +4339,7 @@
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                 "yargs": {
                     "version": "11.1.0",
-                    "resolved": "http://registry.npmjs.org/yargs/-/yargs-11.1.0.tgz",
+                    "resolved": "https://registry.npmjs.org/yargs/-/yargs-11.1.0.tgz",
                     "integrity": "sha512-NwW69J42EsCSanF8kyn5upxvjp5ds+t3+udGBeTbFnERA+lF541DDpMawzo4z6W/QrzNM18D+BPMiOBibnFV5A==",
                     "dev": true,
                     "requires": {
@@ -4686,7 +4691,7 @@
                 },
                 "yargs": {
                     "version": "11.1.0",
-                    "resolved": "http://registry.npmjs.org/yargs/-/yargs-11.1.0.tgz",
+                    "resolved": "https://registry.npmjs.org/yargs/-/yargs-11.1.0.tgz",
                     "integrity": "sha512-NwW69J42EsCSanF8kyn5upxvjp5ds+t3+udGBeTbFnERA+lF541DDpMawzo4z6W/QrzNM18D+BPMiOBibnFV5A==",
                     "dev": true,
                     "requires": {
@@ -5501,7 +5506,7 @@
             "dependencies": {
                 "semver": {
                     "version": "5.3.0",
-                    "resolved": "http://registry.npmjs.org/semver/-/semver-5.3.0.tgz",
+                    "resolved": "https://registry.npmjs.org/semver/-/semver-5.3.0.tgz",
                     "integrity": "sha1-myzl094C0XxgEq0yaqa00M9U+U8="
                 }
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@@ -5587,7 +5592,7 @@
                 },
                 "chalk": {
                     "version": "1.1.3",
-                    "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+                    "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
                     "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
                     "requires": {
                         "ansi-styles": "^2.2.1",
@@ -5837,7 +5842,7 @@
         },
         "os-locale": {
             "version": "1.4.0",
-            "resolved": "http://registry.npmjs.org/os-locale/-/os-locale-1.4.0.tgz",
+            "resolved": "https://registry.npmjs.org/os-locale/-/os-locale-1.4.0.tgz",
             "integrity": "sha1-IPnxeuKe00XoveWDsT0gCYA8FNk=",
             "requires": {
                 "lcid": "^1.0.0"
@@ -7878,7 +7883,7 @@
                 },
                 "yargs": {
                     "version": "3.10.0",
-                    "resolved": "http://registry.npmjs.org/yargs/-/yargs-3.10.0.tgz",
+                    "resolved": "https://registry.npmjs.org/yargs/-/yargs-3.10.0.tgz",
                     "integrity": "sha1-9+572FfdfB0tOMDnTvvWgdFDH9E=",
                     "requires": {
                         "camelcase": "^1.0.2",
@@ -8543,7 +8548,7 @@
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                 "load-json-file": {
                     "version": "2.0.0",
-                    "resolved": "http://registry.npmjs.org/load-json-file/-/load-json-file-2.0.0.tgz",
+                    "resolved": "https://registry.npmjs.org/load-json-file/-/load-json-file-2.0.0.tgz",
                     "integrity": "sha1-eUfkIUmvgNaWy/eXvKq8/h/inKg=",
                     "requires": {
                         "graceful-fs": "^4.1.2",