diff --git a/package-lock.json b/package-lock.json
index d2396bd..495599a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4626,18 +4626,26 @@
       "dev": true
     },
     "elliptic": {
-      "version": "6.5.0",
-      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.0.tgz",
-      "integrity": "sha512-eFOJTMyCYb7xtE/caJ6JJu+bhi67WCYNbkGSknu20pmM8Ke/bqOfdnZWxyoGN26JgfxTbXrsCkEw4KheCT/KGg==",
+      "version": "6.5.4",
+      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.4.tgz",
+      "integrity": "sha512-iLhC6ULemrljPZb+QutR5TQGB+pdW6KGD5RSegS+8sorOZT+rdQFbsQFJgvN3eRqNALqJer4oQ16YvJHlU8hzQ==",
       "dev": true,
       "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==",
+          "dev": true
+        }
       }
     },
     "emoji-regex": {
@@ -8949,20 +8957,6 @@
         }
       }
     },
-    "npm-registry-fetch": {
-      "version": ">=4.0.5",
-      "resolved": "https://registry.npmjs.org/npm-registry-fetch/-/npm-registry-fetch-4.0.0.tgz",
-      "integrity": "sha512-Jllq35Jag8dtv0M17ue74XtdQTyqKzuAYGiX9mAjOhkmNjib3bBUgK6mUY61+AHnXeSRobQkpY3/xIOS/omptw==",
-      "dev": true,
-      "requires": {
-        "JSONStream": "^1.3.4",
-        "bluebird": "^3.5.1",
-        "figgy-pudding": "^3.4.1",
-        "lru-cache": "^5.1.1",
-        "make-fetch-happen": "^5.0.0",
-        "npm-package-arg": "^6.1.0"
-      }
-    },
     "npm-run-path": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/npm-run-path/-/npm-run-path-2.0.2.tgz",
@@ -9305,6 +9299,29 @@
         "which": "^1.3.1"
       },
       "dependencies": {
+        "npm-registry-fetch": {
+          "version": "4.0.7",
+          "resolved": "https://registry.npmjs.org/npm-registry-fetch/-/npm-registry-fetch-4.0.7.tgz",
+          "integrity": "sha512-cny9v0+Mq6Tjz+e0erFAB+RYJ/AVGzkjnISiobqP8OWj9c9FLoZZu8/SPSKJWE17F1tk4018wfjV+ZbIbqC7fQ==",
+          "dev": true,
+          "requires": {
+            "JSONStream": "^1.3.4",
+            "bluebird": "^3.5.1",
+            "figgy-pudding": "^3.4.1",
+            "lru-cache": "^5.1.1",
+            "make-fetch-happen": "^5.0.0",
+            "npm-package-arg": "^6.1.0",
+            "safe-buffer": "^5.2.0"
+          },
+          "dependencies": {
+            "safe-buffer": {
+              "version": "5.2.1",
+              "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.1.tgz",
+              "integrity": "sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==",
+              "dev": true
+            }
+          }
+        },
         "semver": {
           "version": "5.7.1",
           "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",