diff --git a/package-lock.json b/package-lock.json
index 45d1184..18df995 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3116,9 +3116,10 @@
       "integrity": "sha1-fQHG+WFsmlGrD4xUmnnf5uwz76c="
     },
     "node_modules/bn.js": {
-      "version": "4.11.8",
-      "resolved": "http://registry.npm.taobao.org/bn.js/download/bn.js-4.11.8.tgz",
-      "integrity": "sha1-LN4J617jQfSEdGuwMJsyU7GxRC8="
+      "version": "4.12.2",
+      "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.12.2.tgz",
+      "integrity": "sha512-n4DSx829VRTRByMRGdjQ9iqsN0Bh4OolPsFnaZBLcbi8iXcB+kJ9s7EnRt4wILZNV3kPLHkRVfOc/HvhC3ovDw==",
+      "license": "MIT"
     },
     "node_modules/body-parser": {
       "version": "1.18.3",
@@ -5560,19 +5561,26 @@
       }
     },
     "node_modules/elliptic": {
-      "version": "6.4.1",
-      "resolved": "http://registry.npm.taobao.org/elliptic/download/elliptic-6.4.1.tgz",
-      "integrity": "sha1-wtC3d2kRuGcixjLDwGxg8vgZk5o=",
+      "version": "6.6.1",
+      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.6.1.tgz",
+      "integrity": "sha512-RaddvvMatK2LJHqFJ+YA4WysVN5Ita9E35botqIYspQ4TkRAlCicdzKOjlyv/1Za5RyTNn7di//eEV0uTAfe3g==",
+      "license": "MIT",
       "dependencies": {
-        "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"
       }
     },
+    "node_modules/elliptic/node_modules/inherits": {
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+      "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==",
+      "license": "ISC"
+    },
     "node_modules/emoji-regex": {
       "version": "6.5.1",
       "resolved": "http://registry.npm.taobao.org/emoji-regex/download/emoji-regex-6.5.1.tgz",