diff --git a/package-lock.json b/package-lock.json
index 082f7ab..41fc087 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,9 +5,9 @@
   "requires": true,
   "dependencies": {
     "ws": {
-      "version": "7.2.3",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-7.2.3.tgz",
-      "integrity": "sha512-HTDl9G9hbkNDk98naoR/cHDws7+EyYMOdL1BmjsZXRUjf7d+MficC4B7HLUPlSiho0vg+CWKrGIt/VJBd1xunQ=="
+      "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/package.json b/package.json
index 3d37453..724991a 100644
--- a/package.json
+++ b/package.json
@@ -22,6 +22,6 @@
   },
   "homepage": "https://github.com/smalruby/smalruby3-mesh-signaling-server#readme",
   "dependencies": {
-    "ws": "^7.2.3 "
+    "ws": "^7.4.6"
   }
 }