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index 784441c..cbe4e51 100644
--- a/filippo.biondi-sassocartaforbiceonline/package-lock.json
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-      "version": "7.1.2",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-7.1.2.tgz",
-      "integrity": "sha512-gftXq3XI81cJCgkUiAVixA0raD9IVmXqsylCrjRygw4+UOOGzPoxnQ6r/CnVL9i+mDncJo94tSkyrtuuQVBmrg==",
-      "requires": {
-        "async-limiter": "^1.0.0"
-      }
+      "version": "7.4.2",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-7.4.2.tgz",
+      "integrity": "sha512-T4tewALS3+qsrpGI/8dqNMLIVdq/g/85U98HPMa6F0m6xTbvhXU6RCQLqPH3+SlomNV/LdY6RXEbBpMH6EOJnA=="
     },
     "xmlhttprequest-ssl": {
       "version": "1.5.5",
diff --git a/filippo.biondi-sassocartaforbiceonline/package.json b/filippo.biondi-sassocartaforbiceonline/package.json
index 4f56822..6d885cc 100644
--- a/filippo.biondi-sassocartaforbiceonline/package.json
+++ b/filippo.biondi-sassocartaforbiceonline/package.json
@@ -12,6 +12,6 @@
   "dependencies": {
     "dotenv": "^8.2.0",
     "express": "^4.17.1",
-    "socket.io": "^2.3.0"
+    "socket.io": "^2.4.0"
   }
 }