diff --git a/contract/package-lock.json b/contract/package-lock.json
index 5b6f625..ee5bf62 100644
--- a/contract/package-lock.json
+++ b/contract/package-lock.json
@@ -1939,9 +1939,9 @@
       "dev": true
     },
     "elliptic": {
-      "version": "6.5.1",
-      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.1.tgz",
-      "integrity": "sha512-xvJINNLbTeWQjrl6X+7eQCrIy/YPv5XCpKW6kB5mKvtnGILoLDcySuwomfdzt0BMdLNVnuRNTuzKNHj0bva1Cg==",
+      "version": "6.5.3",
+      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.3.tgz",
+      "integrity": "sha512-IMqzv5wNQf+E6aHeIqATs0tOLeOTwj1QKbRcS3jBbYkl5oLAserA8yJTT7/VyHUYG91PRmPyeQDObKLPpeS4dw==",
       "dev": true,
       "requires": {
         "bn.js": "^4.4.0",
@@ -3605,8 +3605,7 @@
         },
         "brorand": {
           "version": "1.1.0",
-          "bundled": true,
-          "dev": true
+          "bundled": true
         },
         "browserify-aes": {
           "version": "1.2.0",
@@ -3720,20 +3719,6 @@
             "create-hmac": "^1.1.4"
           }
         },
-        "elliptic": {
-          "version": "6.5.0",
-          "bundled": true,
-          "dev": true,
-          "requires": {
-            "bn.js": "^4.4.0",
-            "brorand": "^1.0.1",
-            "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"
-          }
-        },
         "emoji-regex": {
           "version": "7.0.3",
           "bundled": true,
@@ -3831,7 +3816,6 @@
         "hash.js": {
           "version": "1.1.7",
           "bundled": true,
-          "dev": true,
           "requires": {
             "inherits": "^2.0.3",
             "minimalistic-assert": "^1.0.1"
@@ -3840,7 +3824,6 @@
         "hmac-drbg": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true,
           "requires": {
             "hash.js": "^1.0.3",
             "minimalistic-assert": "^1.0.0",
@@ -3849,8 +3832,7 @@
         },
         "inherits": {
           "version": "2.0.4",
-          "bundled": true,
-          "dev": true
+          "bundled": true
         },
         "invert-kv": {
           "version": "2.0.0",
@@ -3940,13 +3922,11 @@
         },
         "minimalistic-assert": {
           "version": "1.0.1",
-          "bundled": true,
-          "dev": true
+          "bundled": true
         },
         "minimalistic-crypto-utils": {
           "version": "1.0.1",
-          "bundled": true,
-          "dev": true
+          "bundled": true
         },
         "nan": {
           "version": "2.14.0",