diff --git a/package.json b/package.json
index 4e85e403..a8f05d11 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
     "lint": "bunx @biomejs/biome check ."
   },
   "dependencies": {
-    "diff": "^8.0.3",
+    "diff": "^9.0.0",
     "yaml": "^2.8.2"
   }
 }