diff --git a/package-lock.json b/package-lock.json
index 8df2cd8..e713686 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -242,6 +242,15 @@
         "vary": "^1"
       }
     },
+    "cpu-features": {
+      "version": "0.0.2",
+      "resolved": "https://registry.npmjs.org/cpu-features/-/cpu-features-0.0.2.tgz",
+      "integrity": "sha512-/2yieBqvMcRj8McNzkycjW2v3OIUOibBfd2dLEJ0nWts8NobAxwiyw9phVNS6oDL8x8tz9F7uNVFEVpJncQpeA==",
+      "optional": true,
+      "requires": {
+        "nan": "^2.14.1"
+      }
+    },
     "dashdash": {
       "version": "1.14.1",
       "resolved": "https://registry.npmjs.org/dashdash/-/dashdash-1.14.1.tgz",
@@ -746,6 +755,12 @@
         "sqlstring": "2.3.1"
       }
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+    "nan": {
+      "version": "2.15.0",
+      "resolved": "https://registry.npmjs.org/nan/-/nan-2.15.0.tgz",
+      "integrity": "sha512-8ZtvEnA2c5aYCZYd1cvgdnU6cqwixRoYg70xPLWUws5ORTa/lnw+u4amixRS/Ac5U5mQVgp9pnlSUnbNWFaWZQ==",
+      "optional": true
+    },
     "natives": {
       "version": "1.1.6",
       "resolved": "https://registry.npmjs.org/natives/-/natives-1.1.6.tgz",
@@ -1005,11 +1020,6 @@
       "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
       "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg=="
     },
-    "semver": {
-      "version": "5.7.1",
-      "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
-      "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ=="
-    },
     "send": {
       "version": "0.17.1",
       "resolved": "https://registry.npmjs.org/send/-/send-0.17.1.tgz",
@@ -1153,21 +1163,14 @@
       "integrity": "sha1-R1OT/56RR5rqYtyvDKPRSYOn+0A="
     },
     "ssh2": {
-      "version": "0.5.4",
-      "resolved": "https://registry.npmjs.org/ssh2/-/ssh2-0.5.4.tgz",
-      "integrity": "sha1-G/a2soyW6u8mf01sRqWiUXpZnic=",
-      "requires": {
-        "ssh2-streams": "~0.1.15"
-      }
-    },
-    "ssh2-streams": {
-      "version": "0.1.20",
-      "resolved": "https://registry.npmjs.org/ssh2-streams/-/ssh2-streams-0.1.20.tgz",
-      "integrity": "sha1-URGNFUVV31Rp7h9n4M8efoosDjo=",
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/ssh2/-/ssh2-1.4.0.tgz",
+      "integrity": "sha512-XvXwcXKvS452DyQvCa6Ct+chpucwc/UyxgliYz+rWXJ3jDHdtBb9xgmxJdMmnIn5bpgGAEV3KaEsH98ZGPHqwg==",
       "requires": {
-        "asn1": "~0.2.0",
-        "semver": "^5.1.0",
-        "streamsearch": "~0.1.2"
+        "asn1": "^0.2.4",
+        "bcrypt-pbkdf": "^1.0.2",
+        "cpu-features": "0.0.2",
+        "nan": "^2.15.0"
       }
     },
     "sshpk": {
@@ -1191,11 +1194,6 @@
       "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.5.0.tgz",
       "integrity": "sha1-Fhx9rBd2Wf2YEfQ3cfqZOBR4Yow="
     },
-    "streamsearch": {
-      "version": "0.1.2",
-      "resolved": "https://registry.npmjs.org/streamsearch/-/streamsearch-0.1.2.tgz",
-      "integrity": "sha1-gIudDlb8Jz2Am6VzOOkpkZoanxo="
-    },
     "string_decoder": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
@@ -1283,13 +1281,13 @@
       }
     },
     "tunnel-ssh": {
-      "version": "4.1.4",
-      "resolved": "https://registry.npmjs.org/tunnel-ssh/-/tunnel-ssh-4.1.4.tgz",
-      "integrity": "sha512-CjBqboGvAbM7iXSX2F95kzoI+c2J81YkrHbyyo4SWNKCzU6w5LfEvXBCHu6PPriYaNvfhMKzD8bFf5Vl14YTtg==",
+      "version": "4.1.6",
+      "resolved": "https://registry.npmjs.org/tunnel-ssh/-/tunnel-ssh-4.1.6.tgz",
+      "integrity": "sha512-y7+x+T3F3rkx2Zov5Tk9DGfeEBVAdWU3A/91E0Dk5rrZ/VFIlpV2uhhRuaISJUdyG0N+Lcp1fXZMXz+ovPt5vA==",
       "requires": {
         "debug": "2.6.9",
         "lodash.defaults": "^4.1.0",
-        "ssh2": "0.5.4"
+        "ssh2": "1.4.0"
       }
     },
     "tweetnacl": {