diff --git a/clients_protocol/__init__.py b/clients_protocol/__init__.py
index 9eacaf0..8b94f5d 100644
--- a/clients_protocol/__init__.py
+++ b/clients_protocol/__init__.py
@@ -48,6 +48,7 @@ class AbstractClient(abc.ABC):
         if 'method' in kwargs:
             method = kwargs['method']
             del kwargs['method']
+        kwargs.setdefault('headers', {}).setdefault('Origin', url) # TODO?
         return self.session.request(
             method,
             url,
@@ -65,18 +66,22 @@ class AbstractClient(abc.ABC):
         params=None,
         **kwargs,
     ) -> None | bs4.BeautifulSoup:
+        kwargs.setdefault('headers', {}).setdefault('Accept',  'text/html')
         text = self.fetch_text(url, params, **kwargs)
         if text is None:
             return None
         return lxml.html.document_fromstring(text)
 
     def fetch_soup(self, url: str, params=None, **kwargs) -> None | bs4.BeautifulSoup:
+        kwargs.setdefault('headers', {}).setdefault('Accept',  'text/html')
         text = self.fetch_text(url, params, **kwargs)
         if text is None:
             return None
         return bs4.BeautifulSoup(text, 'html.parser')
 
     def fetch_json(self, url: str, params=None, **kwargs) -> None | dict[str, Any]:
+        kwargs.setdefault('headers', {}).setdefault('Accept',  'application/json')
+
         response = self.fetch(url, params, **kwargs)
         loaded_json = response.json()
         if API_ERROR_KEY in loaded_json: