diff --git a/docs/package.json b/docs/package.json
index f282a095..c7fac761 100644
--- a/docs/package.json
+++ b/docs/package.json
@@ -26,6 +26,6 @@
     "v-calendar": "^3.1.2",
     "valibot": "^1.1.0",
     "yup": "^1.6.1",
-    "zod": "^3.25.76"
+    "zod": "^4.0.5"
   }
 }
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index f923bdce..c28fb296 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -215,8 +215,8 @@ importers:
         specifier: ^1.6.1
         version: 1.6.1
       zod:
-        specifier: ^3.25.76
-        version: 3.25.76
+        specifier: ^4.0.5
+        version: 4.0.5
 
   playground:
     dependencies:
@@ -6883,6 +6883,9 @@ packages:
   zod@3.25.76:
     resolution: {integrity: sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==}
 
+  zod@4.0.5:
+    resolution: {integrity: sha512-/5UuuRPStvHXu7RS+gmvRf4NXrNxpSllGwDnCBcJZtQsKrviYXm54yDGV2KYNLT5kq0lHGcl7lqWJLgSaG+tgA==}
+
   zwitch@2.0.4:
     resolution: {integrity: sha512-bXE4cR/kVZhKZX/RjPEflHaKVhUVl85noU3v6b8apfQEc1x4A+zBxjZ4lN8LqGd6WZ3dl98pY4o717VFmoPp+A==}
 
@@ -14948,4 +14951,6 @@ snapshots:
 
   zod@3.25.76: {}
 
+  zod@4.0.5: {}
+
   zwitch@2.0.4: {}