diff --git a/package-lock.json b/package-lock.json
index c504714..9a1ef3f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -644,15 +644,18 @@
       }
     },
     "elliptic": {
-      "version": "6.3.2",
-      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.3.2.tgz",
-      "integrity": "sha1-5MgeCCnPCmWrcOmYuCMnI7XBvEg=",
+      "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",
         "brorand": "^1.0.1",
         "hash.js": "^1.0.0",
-        "inherits": "^2.0.1"
+        "hmac-drbg": "^1.0.0",
+        "inherits": "^2.0.1",
+        "minimalistic-assert": "^1.0.0",
+        "minimalistic-crypto-utils": "^1.0.0"
       }
     },
     "escodegen": {
@@ -804,6 +807,17 @@
         "inherits": "^2.0.1"
       }
     },
+    "hmac-drbg": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/hmac-drbg/-/hmac-drbg-1.0.1.tgz",
+      "integrity": "sha1-0nRXAQJabHdabFRXk+1QL8DGSaE=",
+      "dev": true,
+      "requires": {
+        "hash.js": "^1.0.3",
+        "minimalistic-assert": "^1.0.0",
+        "minimalistic-crypto-utils": "^1.0.1"
+      }
+    },
     "html-encoding-sniffer": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/html-encoding-sniffer/-/html-encoding-sniffer-2.0.1.tgz",
@@ -1107,6 +1121,12 @@
       "integrity": "sha1-cCvi3aazf0g2vLP121ZkG2Sh09M=",
       "dev": true
     },
+    "minimalistic-crypto-utils": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/minimalistic-crypto-utils/-/minimalistic-crypto-utils-1.0.1.tgz",
+      "integrity": "sha1-9sAMHAsIIkblxNmd+4x8CDsrWCo=",
+      "dev": true
+    },
     "minimatch": {
       "version": "3.0.3",
       "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.3.tgz",