diff --git a/vdirsyncer/storage/dav.py b/vdirsyncer/storage/dav.py
index 2fec741..3a3fa1d 100644
--- a/vdirsyncer/storage/dav.py
+++ b/vdirsyncer/storage/dav.py
@@ -230,16 +230,17 @@ class DavSession(object):
         self.parsed_url = utils.urlparse.urlparse(self.url)
         self._session = None
 
-    def request(self, method, path, data=None, headers=None,
-                is_subpath=True):
+    def request(self, method, path, is_subpath=True, **kwargs):
         url = self.url
         if path:
             url = utils.urlparse.urljoin(self.url, path)
         assert url.startswith(self.url) or not is_subpath
         if self._session is None:
             self._session = requests_session()
-        return utils.request(method, url, data=data, headers=headers,
-                             session=self._session, **self._settings)
+
+        more = dict(self._settings)
+        more.update(kwargs)
+        return utils.request(method, url, session=self._session, **more)
 
     def get_default_headers(self):
         return {
diff --git a/vdirsyncer/utils/__init__.py b/vdirsyncer/utils/__init__.py
index e616d37..ec00091 100644
--- a/vdirsyncer/utils/__init__.py
+++ b/vdirsyncer/utils/__init__.py
@@ -232,8 +232,8 @@ class _FingerprintAdapter(requests.adapters.HTTPAdapter):
                                        assert_fingerprint=self.fingerprint)
 
 
-def request(method, url, data=None, headers=None, auth=None, verify=None,
-            session=None, latin1_fallback=True, verify_fingerprint=None):
+def request(method, url, session=None, latin1_fallback=True,
+            verify_fingerprint=None, **kwargs):
     '''
     Wrapper method for requests, to ease logging and mocking. Parameters should
     be the same as for ``requests.request``, except:
@@ -262,10 +262,10 @@ def request(method, url, data=None, headers=None, auth=None, verify=None,
     func = session.request
 
     logger.debug(u'{} {}'.format(method, url))
-    logger.debug(headers)
-    logger.debug(data)
+    logger.debug(kwargs.get('headers', {}))
+    logger.debug(kwargs.get('data', None))
     logger.debug('Sending request...')
-    r = func(method, url, data=data, headers=headers, auth=auth, verify=verify)
+    r = func(method, url, **kwargs)
 
     # See https://github.com/kennethreitz/requests/issues/2042
     content_type = r.headers.get('Content-Type', '')