diff --git a/package-lock.json b/package-lock.json
index 8a70568..8fe920f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -187,7 +187,7 @@
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-          "resolved": "http://registry.npmjs.org/source-map/-/source-map-0.5.6.tgz",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.6.tgz",
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@@ -536,7 +536,8 @@
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@@ -557,12 +558,14 @@
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+              "dev": true,
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@@ -577,17 +580,20 @@
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+              "dev": true,
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@@ -704,7 +710,8 @@
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@@ -716,6 +723,7 @@
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@@ -730,6 +738,7 @@
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@@ -737,12 +746,14 @@
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@@ -761,6 +772,7 @@
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@@ -841,7 +853,8 @@
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@@ -853,6 +866,7 @@
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@@ -938,7 +952,8 @@
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@@ -974,6 +989,7 @@
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@@ -993,6 +1009,7 @@
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@@ -1036,12 +1053,14 @@
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@@ -1074,7 +1093,7 @@
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-          "resolved": "http://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
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-      "resolved": "http://registry.npmjs.org/@types/node/-/node-8.9.5.tgz",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-8.9.5.tgz",
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-          "resolved": "http://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
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-          "resolved": "http://registry.npmjs.org/globby/-/globby-6.1.0.tgz",
+          "resolved": "https://registry.npmjs.org/globby/-/globby-6.1.0.tgz",
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-              "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+              "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
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@@ -3813,18 +3832,32 @@
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+      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.4.tgz",
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       "dev": true,
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-        "brorand": "^1.0.1",
+        "bn.js": "^4.11.9",
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-        "inherits": "^2.0.1",
-        "minimalistic-assert": "^1.0.0",
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+        "hmac-drbg": "^1.0.1",
+        "inherits": "^2.0.4",
+        "minimalistic-assert": "^1.0.1",
+        "minimalistic-crypto-utils": "^1.0.1"
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+          "dev": true
+        }
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@@ -5634,7 +5667,7 @@
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-          "resolved": "http://registry.npmjs.org/core-js/-/core-js-2.3.0.tgz",
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@@ -7358,7 +7391,7 @@
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-          "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
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@@ -9275,7 +9308,7 @@
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-      "resolved": "http://registry.npmjs.org/sax/-/sax-0.5.8.tgz",
+      "resolved": "https://registry.npmjs.org/sax/-/sax-0.5.8.tgz",
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-      "resolved": "http://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
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-          "resolved": "http://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
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@@ -11178,7 +11211,8 @@
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@@ -11199,12 +11233,14 @@
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               "version": "1.1.11",
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@@ -11219,17 +11255,20 @@
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+              "optional": true
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@@ -11403,6 +11447,7 @@
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@@ -11483,7 +11528,8 @@
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@@ -11495,6 +11541,7 @@
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@@ -11580,7 +11627,8 @@
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@@ -11616,6 +11664,7 @@
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@@ -11635,6 +11684,7 @@
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@@ -11678,12 +11728,14 @@
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             "yallist": {
               "version": "3.0.3",
               "bundled": true,
-              "dev": true
+              "dev": true,
+              "optional": true
             }
           }
         },