diff --git a/web/package-lock.json b/web/package-lock.json
index 7a18225..83397ec 100644
--- a/web/package-lock.json
+++ b/web/package-lock.json
@@ -246,6 +246,11 @@
       "integrity": "sha1-NhIfhFwFeBct5Bmpfb6x0W7DRUI=",
       "dev": true
     },
+    "async-limiter": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/async-limiter/-/async-limiter-1.0.1.tgz",
+      "integrity": "sha512-csOlWGAcRFJaI6m+F2WKdnMKr4HhdhFVBk0H/QbJFMCr+uO2kwohwXQPxw/9OCxp05r5ghVBFSyioixx3gfkNQ=="
+    },
     "asynckit": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
@@ -5815,9 +5820,9 @@
       }
     },
     "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=="
     },
     "umd": {
       "version": "3.0.1",
@@ -6098,12 +6103,13 @@
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
     },
     "ws": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-3.1.0.tgz",
-      "integrity": "sha1-ivr+zeq0bVcuU5fuiAc5Nnqi9Bw=",
+      "version": "3.3.1",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-3.3.1.tgz",
+      "integrity": "sha512-8A/uRMnQy8KCQsmep1m7Bk+z/+LIkeF7w+TDMLtX1iZm5Hq9HsUDmgFGaW1ACW5Cj0b2Qo7wCvRhYN2ErUVp/A==",
       "requires": {
-        "safe-buffer": "5.1.1",
-        "ultron": "1.1.0"
+        "async-limiter": "~1.0.0",
+        "safe-buffer": "~5.1.0",
+        "ultron": "~1.1.0"
       }
     },
     "xtend": {
diff --git a/web/package.json b/web/package.json
index 6e1d214..db95cb1 100644
--- a/web/package.json
+++ b/web/package.json
@@ -17,7 +17,7 @@
     "gulp-cssimport": "^6.0.0",
     "minimist": "^1.2.0",
     "routes": "^2.1.0",
-    "ws": "^3.1.0"
+    "ws": "^3.3.1"
   },
   "devDependencies": {
     "arraybuffer-to-buffer": "0.0.4",