diff --git a/package-lock.json b/package-lock.json
index a662423..c15bae9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,14 +18,14 @@
       }
     },
     "async-limiter": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/async-limiter/-/async-limiter-1.0.0.tgz",
-      "integrity": "sha512-jp/uFnooOiO+L211eZOoSyzpOITMXx1rBITauYykG3BRYPu8h0UcxsPNB04RR5vo4Tyz3+ay17tR6JVf9qzYWg=="
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/async-limiter/-/async-limiter-1.0.1.tgz",
+      "integrity": "sha512-csOlWGAcRFJaI6m+F2WKdnMKr4HhdhFVBk0H/QbJFMCr+uO2kwohwXQPxw/9OCxp05r5ghVBFSyioixx3gfkNQ=="
     },
     "safe-buffer": {
-      "version": "5.1.1",
-      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.1.tgz",
-      "integrity": "sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg=="
+      "version": "5.1.2",
+      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
+      "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
     },
     "typescript": {
       "version": "2.5.3",
@@ -34,18 +34,18 @@
       "dev": true
     },
     "ultron": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/ultron/-/ultron-1.1.0.tgz",
-      "integrity": "sha1-sHoualQagV/Go0zNRTO67DB8qGQ="
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/ultron/-/ultron-1.1.1.tgz",
+      "integrity": "sha512-UIEXBNeYmKptWH6z8ZnqTeS8fV74zG0/eRU9VGkpzz+LIJNs8W/zM/L+7ctCkRrgbNnnR0xxw4bKOr0cW0N0Og=="
     },
     "ws": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-3.2.0.tgz",
-      "integrity": "sha512-hTS3mkXm/j85jTQOIcwVz3yK3up9xHgPtgEhDBOH3G18LDOZmSAG1omJeXejLKJakx+okv8vS1sopgs7rw0kVw==",
+      "version": "3.3.1",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-3.3.1.tgz",
+      "integrity": "sha512-8A/uRMnQy8KCQsmep1m7Bk+z/+LIkeF7w+TDMLtX1iZm5Hq9HsUDmgFGaW1ACW5Cj0b2Qo7wCvRhYN2ErUVp/A==",
       "requires": {
-        "async-limiter": "1.0.0",
-        "safe-buffer": "5.1.1",
-        "ultron": "1.1.0"
+        "async-limiter": "~1.0.0",
+        "safe-buffer": "~5.1.0",
+        "ultron": "~1.1.0"
       }
     }
   }