diff --git a/package.json b/package.json
index c1450f388..494e62ca5 100644
--- a/package.json
+++ b/package.json
@@ -89,7 +89,7 @@
     "fast-glob": "3.3.3",
     "fs-extra": "catalog:",
     "glob": "13.0.6",
-    "js-yaml": "4.3.1",
+    "js-yaml": "5.2.3",
     "jsdom": "29.1.1",
     "jsonc-eslint-parser": "3.1.0",
     "kill-port": "2.0.1",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index bba28276d..8600f1ff5 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -187,8 +187,8 @@ importers:
         specifier: 13.0.6
         version: 13.0.6
       js-yaml:
-        specifier: 4.3.1
-        version: 4.3.1
+        specifier: 5.2.3
+        version: 5.2.3
       jsdom:
         specifier: 29.1.1
         version: 29.1.1
@@ -5841,6 +5841,10 @@ packages:
     resolution: {integrity: sha512-CY6crGq313MX8GkwvB7tzgp99vjQxY1++5y10/BKN/GUfHqWaOGQMNZkBvqSzsZKWk/ijwHlWzzkLulsGHhjWQ==}
     hasBin: true
 
+  js-yaml@5.2.3:
+    resolution: {integrity: sha512-n+mUVyUX5bVv7G/G2zyIHOhdxfuU1dY2NOFzTQUWiMUbFss8b57NFlgCCaggU78wSw5KVS9cllzeLyzyR+n5nw==}
+    hasBin: true
+
   jsdom@29.1.1:
     resolution: {integrity: sha512-ECi4Fi2f7BdJtUKTflYRTiaMxIB0O6zfR1fX0GXpUrf6flp8QIYn1UT20YQqdSOfk2dfkCwS8LAFoJDEppNK5Q==}
     engines: {node: ^20.19.0 || ^22.13.0 || >=24.0.0}
@@ -13143,6 +13147,10 @@ snapshots:
     dependencies:
       argparse: 2.0.1
 
+  js-yaml@5.2.3:
+    dependencies:
+      argparse: 2.0.1
+
   jsdom@29.1.1:
     dependencies:
       '@asamuzakjp/css-color': 5.1.11