diff --git a/displayer.js b/displayer.js
index bdf600d..b75aaa7 100644
--- a/displayer.js
+++ b/displayer.js
@@ -11,6 +11,7 @@ const update = async (headers,numbers,client,token) => {
           url: 'http://play.louismazin.ovh:8212/v1/api/metrics',
           headers: { 
             'Accept': 'application/json', 
+            'Content-Type': 'application/json',
             'Authorization': `Basic ${token}`
           }
         };