diff --git a/tools/gen-types/package.json b/tools/gen-types/package.json
index c978922..b673bdb 100644
--- a/tools/gen-types/package.json
+++ b/tools/gen-types/package.json
@@ -8,7 +8,7 @@
     "test": "bun test"
   },
   "dependencies": {
-    "js-yaml": "^4.1.0",
+    "js-yaml": "^5.1.0",
     "ts-morph": "^28.0.0"
   },
   "devDependencies": {