diff --git a/package-lock.json b/package-lock.json
index 604c772..a187db1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -159,7 +159,6 @@
       "resolved": "http://registry.npm.taobao.org/bcrypt-pbkdf/download/bcrypt-pbkdf-1.0.1.tgz",
       "integrity": "sha1-Y7xdy2EzG5K8Bf1SiVPDNGKgb40=",
       "dev": true,
-      "optional": true,
       "requires": {
         "tweetnacl": "^0.14.3"
       }
@@ -453,7 +452,6 @@
       "resolved": "http://registry.npm.taobao.org/ecc-jsbn/download/ecc-jsbn-0.1.1.tgz",
       "integrity": "sha1-D8c6ntXw1Tw4GTOYUj735UN3dQU=",
       "dev": true,
-      "optional": true,
       "requires": {
         "jsbn": "~0.1.0"
       }
@@ -1286,8 +1284,7 @@
       "version": "0.1.1",
       "resolved": "http://registry.npm.taobao.org/jsbn/download/jsbn-0.1.1.tgz",
       "integrity": "sha1-peZUwuWi3rXyAdls77yoDA7y9RM=",
-      "dev": true,
-      "optional": true
+      "dev": true
     },
     "json-parse-better-errors": {
       "version": "1.0.1",
@@ -3641,6 +3638,12 @@
       "integrity": "sha1-iTMSr2myEj3vcfV4iQAWce6yyFM=",
       "dev": true
     },
+    "safer-buffer": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
+      "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==",
+      "dev": true
+    },
     "samsam": {
       "version": "1.3.0",
       "resolved": "http://registry.npm.taobao.org/samsam/download/samsam-1.3.0.tgz",
@@ -3720,9 +3723,9 @@
       "dev": true
     },
     "sshpk": {
-      "version": "1.13.1",
-      "resolved": "http://registry.npm.taobao.org/sshpk/download/sshpk-1.13.1.tgz",
-      "integrity": "sha1-US322mKHFEMW3EwY/hzx2UBzm+M=",
+      "version": "1.16.1",
+      "resolved": "https://registry.npmjs.org/sshpk/-/sshpk-1.16.1.tgz",
+      "integrity": "sha512-HXXqVUq7+pcKeLqqZj6mHFUMvXtOJt1uoUx09pFW6011inTMxqI8BA8PM95myrIyyKwdnzjdFjLiE6KBPVtJIg==",
       "dev": true,
       "requires": {
         "asn1": "~0.2.3",
@@ -3732,12 +3735,13 @@
         "ecc-jsbn": "~0.1.1",
         "getpass": "^0.1.1",
         "jsbn": "~0.1.0",
+        "safer-buffer": "^2.0.2",
         "tweetnacl": "~0.14.0"
       },
       "dependencies": {
         "assert-plus": {
           "version": "1.0.0",
-          "resolved": "http://registry.npm.taobao.org/assert-plus/download/assert-plus-1.0.0.tgz",
+          "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
           "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
           "dev": true
         }
@@ -3917,8 +3921,7 @@
       "version": "0.14.5",
       "resolved": "http://registry.npm.taobao.org/tweetnacl/download/tweetnacl-0.14.5.tgz",
       "integrity": "sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q=",
-      "dev": true,
-      "optional": true
+      "dev": true
     },
     "type-check": {
       "version": "0.3.2",