diff --git a/insert_wordpress.py b/insert_wordpress.py
index a9e71d9..7db1fd1 100644
--- a/insert_wordpress.py
+++ b/insert_wordpress.py
@@ -44,8 +44,9 @@ class WPimport:
                             page = requests.get(img_src)
                             if page.status_code == 200:
                                 media=self._addOrUpdateMedia(img_src, page)
+                                headers = {'Content-Type': 'application/json', 'Accept':'application/json'}
                                 data = {"featured_media": media["id"]}
-                                r = requests.post("http://{0}/wp-json/wp/v2/posts/{1}".format(self._wordpress, result[0]["id"]), auth=self._basic, data=json.dumps(data))
+                                r = requests.post("http://{0}/wp-json/wp/v2/posts/{1}".format(self._wordpress, result[0]["id"]), auth=self._basic, headers=headers, data=json.dumps(data))
                                 if r.status_code == 200:
                                     print("Ajout media featured : {0}".format(r.json()["title"]["raw"]))