diff --git a/http-api/tests/test_auth.py b/http-api/tests/test_auth.py
index a2b4ea0..52e6102 100644
--- a/http-api/tests/test_auth.py
+++ b/http-api/tests/test_auth.py
@@ -1,7 +1,9 @@
 import auth as app
 
+from .conftest import LambdaContext
 
-def test_bearer_jwt(lambda_context):
+
+def test_bearer_jwt(lambda_context: LambdaContext):
     app.get_user = lambda *args, **kwargs: {
         'sub': '58efed8d-d276-41a8-8502-4ab8b5a6415e',
         'name': 'pytest',
@@ -13,7 +15,7 @@ def test_bearer_jwt(lambda_context):
         },
     }
 
-    assert app.lambda_handler(event, lambda_context) == {  # type: ignore
+    assert app.lambda_handler(event, lambda_context) == {
         'isAuthorized': True,
         'context': {
             'user': {
diff --git a/layercake/layercake/extra_types.py b/layercake/layercake/extra_types.py
index f9df46e..3e9f393 100644
--- a/layercake/layercake/extra_types.py
+++ b/layercake/layercake/extra_types.py
@@ -148,6 +148,17 @@ class CpfCnpj:
 
         return cpfcnpj_
 
+    @classmethod
+    def __get_pydantic_json_schema__(
+        cls, core_schema: core_schema.CoreSchema, handler: GetJsonSchemaHandler
+    ) -> JsonSchemaValue:
+        field_schema = handler(core_schema)
+        field_schema.update(
+            type='string',
+            format=cls.__name__.lower().removesuffix('str'),
+        )
+        return field_schema
+
 
 if TYPE_CHECKING:
     CpfStr = Annotated[str, ...]