diff --git a/release_dashboard/utils/docker.py b/release_dashboard/utils/docker.py
index 5def213..33544c4 100644
--- a/release_dashboard/utils/docker.py
+++ b/release_dashboard/utils/docker.py
@@ -80,8 +80,6 @@ def delete_docker_info(url):
         logger.debug("Debug mode, would trigger: %s", url)
     else:
         logger.debug("trigger: %s", url)
-        headers = {'accept':
-                   'application/vnd.docker.distribution.manifest.v2+json'}
         response = requests.delete(url)
         logger.debug("response: %s" % response)
         response.raise_for_status()