diff --git a/package-lock.json b/package-lock.json
index e74c584..e193755 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2204,17 +2204,24 @@
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-      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.3.tgz",
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+      "version": "6.5.4",
+      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.4.tgz",
+      "integrity": "sha512-iLhC6ULemrljPZb+QutR5TQGB+pdW6KGD5RSegS+8sorOZT+rdQFbsQFJgvN3eRqNALqJer4oQ16YvJHlU8hzQ==",
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-        "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=="
+        }
       }
     },
     "emoji-regex": {
@@ -4426,14 +4433,6 @@
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-      "resolved": "https://registry.npmjs.org/map-age-cleaner/-/map-age-cleaner-0.1.3.tgz",
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-      "requires": {
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@@ -4462,6 +4461,14 @@
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+    "mem": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/mem/-/mem-1.1.0.tgz",
+      "integrity": "sha1-Xt1StIXKHZAP5kiVUFOZoN+kX3Y=",
+      "requires": {
+        "mimic-fn": "^1.0.0"
+      }
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       "resolved": "https://registry.npmjs.org/memory-fs/-/memory-fs-0.4.1.tgz",
@@ -5032,21 +5039,11 @@
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-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/p-defer/-/p-defer-1.0.0.tgz",
-      "integrity": "sha1-n26xgvbJqozXQwBKfU+WsZaw+ww="
-    },
     "p-finally": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/p-finally/-/p-finally-1.0.0.tgz",
       "integrity": "sha1-P7z7FbiZpEEjs0ttzBi3JDNqLK4="
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-    "p-is-promise": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/p-is-promise/-/p-is-promise-1.1.0.tgz",
-      "integrity": "sha1-nJRWmJ6fZYgBewQ01WCXZ1w9oF4="
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       "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-1.3.0.tgz",
@@ -6882,18 +6879,6 @@
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-          "dependencies": {
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-              "version": "4.0.0",
-              "resolved": "https://registry.npmjs.org/mem/-/mem-4.0.0.tgz",
-              "integrity": "sha512-WQxG/5xYc3tMbYLXoXPm81ET2WDULiU5FxbuIoNbJqLOOI8zehXFdZuiUEgfdrU2mVB1pxBZUGlYORSrpuJreA==",
-              "requires": {
-                "map-age-cleaner": "^0.1.1",
-                "mimic-fn": "^1.0.0",
-                "p-is-promise": "^1.1.0"
-              }
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         "path-type": {