diff --git a/package-lock.json b/package-lock.json
index c1dd6f6..4392578 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1498,6 +1498,12 @@
         "event-emitter": "~0.3.5"
       }
     },
+    "es6-promisify": {
+      "version": "6.1.1",
+      "resolved": "https://registry.npmjs.org/es6-promisify/-/es6-promisify-6.1.1.tgz",
+      "integrity": "sha512-HBL8I3mIki5C1Cc9QjKUenHtnG0A5/xA8Q/AllRcfiwl2CZFXGK7ddBiCoRwAix4i2KxcQfjtIVcrVbB3vbmwg==",
+      "dev": true
+    },
     "es6-set": {
       "version": "0.1.5",
       "resolved": "https://registry.npmjs.org/es6-set/-/es6-set-0.1.5.tgz",
@@ -4229,15 +4235,26 @@
       }
     },
     "pem": {
-      "version": "1.12.5",
-      "resolved": "https://registry.npmjs.org/pem/-/pem-1.12.5.tgz",
-      "integrity": "sha512-mm8gLf4ZCaY6Qdm8J4bBdHs6SO4px71FspxgC2jJ0vXf3PYNZnGhU9zITCxpzFHpLPHsHU3xRBbuXNxEWuWziQ==",
+      "version": "1.14.4",
+      "resolved": "https://registry.npmjs.org/pem/-/pem-1.14.4.tgz",
+      "integrity": "sha512-v8lH3NpirgiEmbOqhx0vwQTxwi0ExsiWBGYh0jYNq7K6mQuO4gI6UEFlr6fLAdv9TPXRt6GqiwE37puQdIDS8g==",
       "dev": true,
       "requires": {
+        "es6-promisify": "^6.0.0",
         "md5": "^2.2.1",
         "os-tmpdir": "^1.0.1",
-        "safe-buffer": "^5.1.1",
-        "which": "^1.2.4"
+        "which": "^2.0.2"
+      },
+      "dependencies": {
+        "which": {
+          "version": "2.0.2",
+          "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
+          "integrity": "sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA==",
+          "dev": true,
+          "requires": {
+            "isexe": "^2.0.0"
+          }
+        }
       }
     },
     "pify": {
@@ -5948,15 +5965,6 @@
       "resolved": "https://registry.npmjs.org/websocket-extensions/-/websocket-extensions-0.1.4.tgz",
       "integrity": "sha512-OqedPIGOfsDlo31UNwYbCFMSaO9m9G/0faIHj5/dZFDMFqPTcx6UwqyOy3COEaEOg/9VsGIpdqn62W5KhoKSpg=="
     },
-    "which": {
-      "version": "1.3.1",
-      "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
-      "integrity": "sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==",
-      "dev": true,
-      "requires": {
-        "isexe": "^2.0.0"
-      }
-    },
     "winston": {
       "version": "0.8.3",
       "resolved": "https://registry.npmjs.org/winston/-/winston-0.8.3.tgz",