diff --git a/package-lock.json b/package-lock.json
index 5e9fa23..6827e03 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1278,7 +1278,7 @@
                 },
                 "util": {
                     "version": "0.10.3",
-                    "resolved": "http://registry.npmjs.org/util/-/util-0.10.3.tgz",
+                    "resolved": "https://registry.npmjs.org/util/-/util-0.10.3.tgz",
                     "integrity": "sha1-evsa/lCAUkZInj23/g7TeTNqwPk=",
                     "dev": true,
                     "requires": {
@@ -1730,7 +1730,7 @@
             "dependencies": {
                 "callsites": {
                     "version": "2.0.0",
-                    "resolved": "http://registry.npmjs.org/callsites/-/callsites-2.0.0.tgz",
+                    "resolved": "https://registry.npmjs.org/callsites/-/callsites-2.0.0.tgz",
                     "integrity": "sha1-BuuE8A7qQT2oav/vrL/7Ngk7PFA=",
                     "dev": true
                 }
@@ -2755,18 +2755,26 @@
             "dev": true
         },
         "elliptic": {
-            "version": "6.5.2",
-            "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.2.tgz",
-            "integrity": "sha512-f4x70okzZbIQl/NSRLkI/+tteV/9WqL98zx+SQ69KbXxmVrmjwsNUPn/gYJJ0sHvEak24cZgHIPegRePAtA/xw==",
+            "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": {
@@ -3010,7 +3018,7 @@
                 },
                 "doctrine": {
                     "version": "1.5.0",
-                    "resolved": "http://registry.npmjs.org/doctrine/-/doctrine-1.5.0.tgz",
+                    "resolved": "https://registry.npmjs.org/doctrine/-/doctrine-1.5.0.tgz",
                     "integrity": "sha1-N53Ocw9hZvds76TmcHoVmwLFpvo=",
                     "dev": true,
                     "requires": {
@@ -4953,7 +4961,7 @@
         },
         "json5": {
             "version": "1.0.1",
-            "resolved": "http://registry.npmjs.org/json5/-/json5-1.0.1.tgz",
+            "resolved": "https://registry.npmjs.org/json5/-/json5-1.0.1.tgz",
             "integrity": "sha512-aKS4WQjPenRxiQsC93MNfjx+nbF4PAdYzmd/1JIj8HYzqfbu86beTuNgXDzPknWk0n0uARlyewZo4s++ES36Ow==",
             "dev": true,
             "requires": {
@@ -5613,7 +5621,7 @@
         },
         "pako": {
             "version": "0.2.9",
-            "resolved": "http://registry.npmjs.org/pako/-/pako-0.2.9.tgz",
+            "resolved": "https://registry.npmjs.org/pako/-/pako-0.2.9.tgz",
             "integrity": "sha1-8/dSL073gjSNqBYbrZ7P1Rv4OnU=",
             "dev": true
         },
@@ -6603,7 +6611,7 @@
             "dependencies": {
                 "jsesc": {
                     "version": "0.5.0",
-                    "resolved": "http://registry.npmjs.org/jsesc/-/jsesc-0.5.0.tgz",
+                    "resolved": "https://registry.npmjs.org/jsesc/-/jsesc-0.5.0.tgz",
                     "integrity": "sha1-597mbjXW/Bb3EP6R1c9p9w8IkR0=",
                     "dev": true
                 }