diff --git a/package-lock.json b/package-lock.json
index 823a3cf..30c80e3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -13,7 +13,7 @@
         "@modelcontextprotocol/sdk": "^1.4.0",
         "ajv": "^8.18.0",
         "hono": "^4.12.26",
-        "js-yaml": "^4.1.0",
+        "js-yaml": "^4.3.0",
         "zod": "^4.3.6"
       },
       "bin": {
@@ -1227,9 +1227,19 @@
       }
     },
     "node_modules/js-yaml": {
-      "version": "4.1.1",
-      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-4.1.1.tgz",
-      "integrity": "sha512-qQKT4zQxXl8lLwBtHMWwaTcGfFOZviOJet3Oy/xmGk2gZH677CJM9EvtfdSkgWcATZhj/55JZ0rmy3myCT5lsA==",
+      "version": "4.3.0",
+      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-4.3.0.tgz",
+      "integrity": "sha512-1td788aAnnZ5qs7V2QIRl1owjtYpbKt749Y3xauqQgwIIGF/xXWz1wMTEBx5O3LK3lXLVuqXPdPxj2BoFHaW9Q==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/puzrin"
+        },
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/nodeca"
+        }
+      ],
       "license": "MIT",
       "dependencies": {
         "argparse": "^2.0.1"
diff --git a/package.json b/package.json
index 8b1b269..754dcf4 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "@modelcontextprotocol/sdk": "^1.4.0",
     "ajv": "^8.18.0",
     "hono": "^4.12.26",
-    "js-yaml": "^4.1.0",
+    "js-yaml": "^4.3.0",
     "zod": "^4.3.6"
   },
   "devDependencies": {