diff --git a/client/bs_shutdown.py b/client/bs_shutdown.py
index 130e3ee..a1870a6 100644
--- a/client/bs_shutdown.py
+++ b/client/bs_shutdown.py
@@ -13,6 +13,7 @@ data = json.dumps(payload).encode("utf-8")
 
 req = urllib.request.Request(
     url,
+    headers={"Content-Type": "application/json"},
     data=data,
     method="POST"
 )