diff --git a/package.json b/package.json
index c335b79..da7e1e4 100644
--- a/package.json
+++ b/package.json
@@ -67,7 +67,7 @@
     "@types/node": "^24.12.0",
     "@vue/test-utils": "^2.4.6",
     "changelogen": "^0.6.2",
-    "diff": "^8.0.4",
+    "diff": "^9.0.0",
     "eslint": "^10.1.0",
     "get-port-please": "^3.2.0",
     "happy-dom": "^20.8.9",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index c30ad74..b7db231 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -105,8 +105,8 @@ importers:
         specifier: ^0.6.2
         version: 0.6.2(magicast@0.5.2)
       diff:
-        specifier: ^8.0.4
-        version: 8.0.4
+        specifier: ^9.0.0
+        version: 9.0.0
       eslint:
         specifier: ^10.1.0
         version: 10.1.0(jiti@2.6.1)
@@ -3182,6 +3182,10 @@ packages:
     resolution: {integrity: sha512-DPi0FmjiSU5EvQV0++GFDOJ9ASQUVFh5kD+OzOnYdi7n3Wpm9hWWGfB/O2blfHcMVTL5WkQXSnRiK9makhrcnw==}
     engines: {node: '>=0.3.1'}
 
+  diff@9.0.0:
+    resolution: {integrity: sha512-svtcdpS8CgJyqAjEQIXdb3OjhFVVYjzGAPO8WGCmRbrml64SPw/jJD4GoE98aR7r25A0XcgrK3F02yw9R/vhQw==}
+    engines: {node: '>=0.3.1'}
+
   dom-serializer@2.0.0:
     resolution: {integrity: sha512-wIkAryiqt/nV5EQKqQpo3SToSOV9J0DnbJqwK7Wv/Trc92zIAYZ4FlMu+JPFW1DfGFt81ZTCGgDEabffXeLyJg==}
 
@@ -8969,6 +8973,8 @@ snapshots:
 
   diff@8.0.4: {}
 
+  diff@9.0.0: {}
+
   dom-serializer@2.0.0:
     dependencies:
       domelementtype: 2.3.0