diff --git a/package-lock.json b/package-lock.json
index d86cc5c..8167bd9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,7 +12,7 @@
         "@modelcontextprotocol/sdk": "1.30.0",
         "confetti": "^4.1.5",
         "express": "5.2.1",
-        "yayson": "4.3.0"
+        "yayson": "4.4.0"
       },
       "devDependencies": {
         "@eslint/js": "10.0.1",
@@ -1298,6 +1298,16 @@
         "node": "^20.19.0 || ^22.12.0 || >=24.0.0"
       }
     },
+    "node_modules/confetti/node_modules/yayson": {
+      "version": "4.3.0",
+      "resolved": "https://registry.npmjs.org/yayson/-/yayson-4.3.0.tgz",
+      "integrity": "sha512-z3SNv9xqvxkPrKhJbNLM9ZUJz7lO5M1AjnwFftleLYpZc6/1h7zl13LECCIzVwEASlSaAYIN3yXajqpVKIsXKA==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=20",
+        "npm": ">=10"
+      }
+    },
     "node_modules/confetti/node_modules/zod": {
       "version": "4.1.11",
       "resolved": "https://registry.npmjs.org/zod/-/zod-4.1.11.tgz",
@@ -3156,9 +3166,9 @@
       "license": "ISC"
     },
     "node_modules/yayson": {
-      "version": "4.3.0",
-      "resolved": "https://registry.npmjs.org/yayson/-/yayson-4.3.0.tgz",
-      "integrity": "sha512-z3SNv9xqvxkPrKhJbNLM9ZUJz7lO5M1AjnwFftleLYpZc6/1h7zl13LECCIzVwEASlSaAYIN3yXajqpVKIsXKA==",
+      "version": "4.4.0",
+      "resolved": "https://registry.npmjs.org/yayson/-/yayson-4.4.0.tgz",
+      "integrity": "sha512-QNpHmCb5+2/9LN+2Vbh9KmsVszRfBfKDpYuDKwD0+UK9uSwipTby0dnUdPoLF8OfnOn9pk4AiafMKAzetRifhw==",
       "license": "MIT",
       "engines": {
         "node": ">=20",
diff --git a/package.json b/package.json
index 5c948e1..51c337a 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
     "@modelcontextprotocol/sdk": "1.30.0",
     "confetti": "^4.1.5",
     "express": "5.2.1",
-    "yayson": "4.3.0"
+    "yayson": "4.4.0"
   },
   "devDependencies": {
     "@eslint/js": "10.0.1",