diff --git a/ServerNode/api.py b/ServerNode/api.py
index 2e39e63..20479cf 100644
--- a/ServerNode/api.py
+++ b/ServerNode/api.py
@@ -33,7 +33,7 @@ def add_sensordata():
         
     now = datetime.now()
     
-    timestamp = {"timestamp":now}
+    timestamp = {"timestamp":str(now)}
     
     sensordata.update(timestamp)
     
diff --git a/WorkerNode/NodeMCWifi/NodeMCWifi.ino b/WorkerNode/NodeMCWifi/NodeMCWifi.ino
index 9c40812..0dd72bb 100644
--- a/WorkerNode/NodeMCWifi/NodeMCWifi.ino
+++ b/WorkerNode/NodeMCWifi/NodeMCWifi.ino
@@ -89,9 +89,9 @@ void loop() {
     DynamicJsonDocument doc(2048);
     // Add values in the document
     
-    doc["temperature"] = temperature;
-    doc["moisture"] = moisture;
-    doc["humidity"] = humidity;
+    doc["temperature"] = String(temperature);
+    doc["moisture"] = String(moisture);
+    doc["humidity"] = String(humidity);
 
     String requestBody;
     serializeJson(doc, requestBody);