diff --git a/server/package-lock.json b/server/package-lock.json
index 3752f38..bdcdbb2 100644
--- a/server/package-lock.json
+++ b/server/package-lock.json
@@ -18,11 +18,6 @@
       "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
       "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
     },
-    "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=="
-    },
     "body-parser": {
       "version": "1.18.3",
       "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.18.3.tgz",
@@ -384,12 +379,9 @@
       "integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw="
     },
     "ws": {
-      "version": "6.1.3",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-6.1.3.tgz",
-      "integrity": "sha512-tbSxiT+qJI223AP4iLfQbkbxkwdFcneYinM2+x46Gx2wgvbaOMO36czfdfVUBRTHvzAMRhDd98sA5d/BuWbQdg==",
-      "requires": {
-        "async-limiter": "~1.0.0"
-      }
+      "version": "7.4.6",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-7.4.6.tgz",
+      "integrity": "sha512-YmhHDO4MzaDLB+M9ym/mDA5z0naX8j7SIlT8f8z+I0VtzsRbekxEutHSme7NPS2qE8StCYQNUnfWdXta/Yu85A=="
     }
   }
 }
diff --git a/server/package.json b/server/package.json
index 376b291..83cb308 100644
--- a/server/package.json
+++ b/server/package.json
@@ -14,7 +14,7 @@
   "license": "ISC",
   "dependencies": {
     "express": "^4.16.4",
-    "ws": "^6.1.3"
+    "ws": "^7.4.6"
   },
   "optionalDependencies": {
     "bufferutil": "^4.0.1",