diff --git a/package-lock.json b/package-lock.json
index d5c5d31..2253b57 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -16,7 +16,7 @@
         "express": "^5.2.1",
         "express-rate-limit": "^8.5.2",
         "helmet": "^8.2.0",
-        "js-yaml": "^4.2.0"
+        "js-yaml": "^5.1.0"
       },
       "devDependencies": {
         "jest": "^30.4.2",
@@ -4140,9 +4140,9 @@
       "license": "MIT"
     },
     "node_modules/js-yaml": {
-      "version": "4.2.0",
-      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-4.2.0.tgz",
-      "integrity": "sha512-ePWsvanv0DWuDRsW8dnt+R4jQ31SCRCQ7hhNcPXZPsoBZiemuZNYGf7adZdqX2D86j6rvKp3RpCxVTSb8WQlOw==",
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-5.1.0.tgz",
+      "integrity": "sha512-s8VA5jkR8f22S3NAXmhKPFqGUduqZGlsufabVOgN14iTdw/RXcym7bKkbwjxLK9Yw2lEvvmJjFp119+KPeo8Kg==",
       "funding": [
         {
           "type": "github",
@@ -4158,7 +4158,7 @@
         "argparse": "^2.0.1"
       },
       "bin": {
-        "js-yaml": "bin/js-yaml.js"
+        "js-yaml": "bin/js-yaml.mjs"
       }
     },
     "node_modules/jsesc": {
diff --git a/package.json b/package.json
index b809952..ce31adb 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
     "express": "^5.2.1",
     "express-rate-limit": "^8.5.2",
     "helmet": "^8.2.0",
-    "js-yaml": "^4.2.0"
+    "js-yaml": "^5.1.0"
   },
   "devDependencies": {
     "jest": "^30.4.2",