diff --git a/src/components/PostalCodeInput.tsx b/src/components/PostalCodeInput.tsx
index 1233b259..32b61c90 100644
--- a/src/components/PostalCodeInput.tsx
+++ b/src/components/PostalCodeInput.tsx
@@ -9,7 +9,6 @@ export const PostalCodeInput = (props: ComponentProps<'input'>) => (
     placeholder="00000-000"
     format={format}
     sanitize={sanitize}
-    pattern="^(?:\d{8})?$"
     {...props}
   />
 )
diff --git a/src/lib/schemas/contact.ts b/src/lib/schemas/contact.ts
index f22121b8..a5698818 100644
--- a/src/lib/schemas/contact.ts
+++ b/src/lib/schemas/contact.ts
@@ -28,6 +28,7 @@ export const contactSchema = z.object({
     .string()
     .trim()
     .regex(/^(?:\d{8})?$/, 'CEP inválido')
+    .transform((v) => (v === '' ? undefined : v))
     .optional(),
 })