diff --git a/package-lock.json b/package-lock.json
index e276fc3..e78b0a1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -33,14 +33,6 @@
         "negotiator": "0.6.1"
       }
     },
-    "agent-base": {
-      "version": "4.2.1",
-      "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-4.2.1.tgz",
-      "integrity": "sha512-JVwXMr9nHYTUXsBFKUqhJwvlcYU/blreOEUkhNR2eXZIvwd+c+o5V4MgDPKWnMS/56awN3TRzIP+KoPn+roQtg==",
-      "requires": {
-        "es6-promisify": "^5.0.0"
-      }
-    },
     "ajv": {
       "version": "5.5.2",
       "resolved": "https://registry.npmjs.org/ajv/-/ajv-5.5.2.tgz",
@@ -502,7 +494,7 @@
     },
     "es6-promise": {
       "version": "3.3.1",
-      "resolved": "http://registry.npmjs.org/es6-promise/-/es6-promise-3.3.1.tgz",
+      "resolved": "https://registry.npmjs.org/es6-promise/-/es6-promise-3.3.1.tgz",
       "integrity": "sha1-oIzd6EzNvzTQJ6FFG8kdS80ophM="
     },
     "es6-promisify": {
@@ -791,14 +783,22 @@
       }
     },
     "https-proxy-agent": {
-      "version": "2.2.1",
-      "resolved": "https://registry.npmjs.org/https-proxy-agent/-/https-proxy-agent-2.2.1.tgz",
-      "integrity": "sha512-HPCTS1LW51bcyMYbxUIOO4HEOlQ1/1qRaFWcyxvwaqUS9TY88aoEuHUY33kuAh1YhVVaDQhLZsnPd+XNARWZlQ==",
+      "version": "2.2.4",
+      "resolved": "https://registry.npmjs.org/https-proxy-agent/-/https-proxy-agent-2.2.4.tgz",
+      "integrity": "sha512-OmvfoQ53WLjtA9HeYP9RNrWMJzzAz1JGaSFr1nijg0PVR1JaD/xbJq1mdEIIlxGpXp9eSe/O2LgU9DJmTPd0Eg==",
       "requires": {
-        "agent-base": "^4.1.0",
+        "agent-base": "^4.3.0",
         "debug": "^3.1.0"
       },
       "dependencies": {
+        "agent-base": {
+          "version": "4.3.0",
+          "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-4.3.0.tgz",
+          "integrity": "sha512-salcGninV0nPrwpGNn4VTXBb1SOuXQBiqbrNXoeizJsHrsL6ERFM2Ne3JUSBWRE6aeNJI2ROP/WEEIDUiDe3cg==",
+          "requires": {
+            "es6-promisify": "^5.0.0"
+          }
+        },
         "debug": {
           "version": "3.2.6",
           "resolved": "https://registry.npmjs.org/debug/-/debug-3.2.6.tgz",
@@ -808,9 +808,9 @@
           }
         },
         "ms": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
-          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg=="
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
         }
       }
     },
@@ -999,7 +999,7 @@
       "dependencies": {
         "lodash": {
           "version": "3.5.0",
-          "resolved": "http://registry.npmjs.org/lodash/-/lodash-3.5.0.tgz",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-3.5.0.tgz",
           "integrity": "sha1-Gbs/TVEnjwuMgY7RRcdOz5/kDm0="
         },
         "minimist": {
@@ -1494,7 +1494,7 @@
     },
     "progress": {
       "version": "1.1.8",
-      "resolved": "http://registry.npmjs.org/progress/-/progress-1.1.8.tgz",
+      "resolved": "https://registry.npmjs.org/progress/-/progress-1.1.8.tgz",
       "integrity": "sha1-4mDHj2Fhzdmw5WzD4Khd4Xx6V74="
     },
     "proxy-addr": {
@@ -1870,7 +1870,7 @@
       "dependencies": {
         "rimraf": {
           "version": "2.2.8",
-          "resolved": "http://registry.npmjs.org/rimraf/-/rimraf-2.2.8.tgz",
+          "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.2.8.tgz",
           "integrity": "sha1-5Dm+Kq7jJzIZUnMPmaiSnk/FBYI="
         }
       }