diff --git a/package-lock.json b/package-lock.json
index 90ba326..a80d438 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -441,11 +441,6 @@
       "integrity": "sha1-GdOGodntxufByF04iu28xW0zYC0=",
       "dev": true
     },
-    "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=="
-    },
     "async-settle": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/async-settle/-/async-settle-1.0.0.tgz",
@@ -5642,12 +5637,9 @@
       "dev": true
     },
     "ws": {
-      "version": "6.1.2",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-6.1.2.tgz",
-      "integrity": "sha512-rfUqzvz0WxmSXtJpPMX2EeASXabOrSMk1ruMOV3JBTBjo4ac2lDjGGsbQSyxj8Odhw5fBib8ZKEjDNvgouNKYw==",
-      "requires": {
-        "async-limiter": "~1.0.0"
-      }
+      "version": "7.4.5",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-7.4.5.tgz",
+      "integrity": "sha512-xzyu3hFvomRfXKH8vOFMU3OguG6oOvhXMo3xsGy3xWExqaM2dxBbVxuD99O7m3ZUFMvvscsZDqxfgMaRr/Nr1g=="
     },
     "xtend": {
       "version": "4.0.1",
diff --git a/package.json b/package.json
index da5b119..569aa18 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
     "finalhandler": "^1.1.1",
     "serve-static": "^1.13.2",
     "underscore": "^1.9.1",
-    "ws": "^6.1.2"
+    "ws": "^7.4.5"
   },
   "devDependencies": {
     "browserify": "^16.2.3",