diff --git a/gvaldap/gvaldap/settings/base.py b/gvaldap/gvaldap/settings/base.py
index 136f641..66e1433 100644
--- a/gvaldap/gvaldap/settings/base.py
+++ b/gvaldap/gvaldap/settings/base.py
@@ -290,6 +290,6 @@ BROKER_URL = get_env_setting('GVALDAP_BROKER_URL')
 CELERY_RESULT_BACKEND = 'amqp'
 CELERY_RESULT_PERSISTENT = True
 CELERY_TASK_RESULT_EXPIRES = None
-CELERY_ACCEPT_CONTENT = ['yaml']
-CELERY_RESULT_SERIALIZER = 'yaml'
+CELERY_ACCEPT_CONTENT = ['yaml', 'json']
+CELERY_RESULT_SERIALIZER = 'json'
 ########## END CELERY CONFIGURATION