diff --git a/contract-testing-demo-async/package-lock.json b/contract-testing-demo-async/package-lock.json
index 6e8ad29..5477508 100644
--- a/contract-testing-demo-async/package-lock.json
+++ b/contract-testing-demo-async/package-lock.json
@@ -9,13 +9,13 @@
       "version": "0.0.1",
       "license": "MIT",
       "dependencies": {
-        "ws": "^7.4.6"
+        "ws": "^7.5.10"
       }
     },
     "node_modules/ws": {
-      "version": "7.5.9",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-7.5.9.tgz",
-      "integrity": "sha512-F+P9Jil7UiSKSkppIiD94dN07AwvFixvLIj1Og1Rl9GGMuNipJnV9JzjD6XuqmAeiswGvUmNLjr5cFuXwNS77Q==",
+      "version": "7.5.10",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-7.5.10.tgz",
+      "integrity": "sha512-+dbF1tHwZpXcbOJdVOkzLDxZP1ailvSxM6ZweXTegylPny803bFhA+vqBYw4s31NSAk4S2Qz+AKXK9a4wkdjcQ==",
       "engines": {
         "node": ">=8.3.0"
       },
diff --git a/contract-testing-demo-async/package.json b/contract-testing-demo-async/package.json
index a3a4ad6..09b31e4 100644
--- a/contract-testing-demo-async/package.json
+++ b/contract-testing-demo-async/package.json
@@ -13,6 +13,6 @@
   "author": "laurent.broudoux@gmail.com",
   "license": "MIT",
   "dependencies": {
-    "ws": "^7.4.6"
+    "ws": "^7.5.10"
   }
 }