diff --git a/cura/PrinterOutput/NetworkedPrinterOutputDevice.py b/cura/PrinterOutput/NetworkedPrinterOutputDevice.py
index 5677106782..72b6319020 100644
--- a/cura/PrinterOutput/NetworkedPrinterOutputDevice.py
+++ b/cura/PrinterOutput/NetworkedPrinterOutputDevice.py
@@ -180,10 +180,11 @@ class NetworkedPrinterOutputDevice(PrinterOutputDevice):
             self._createNetworkManager()
         assert (self._manager is not None)
 
-    def put(self, target: str, data: Union[str, bytes], on_finished: Optional[Callable[[QNetworkReply], None]],
+    def put(self, target: str, data: Union[str, bytes], content_type: str = None,
+            on_finished: Optional[Callable[[QNetworkReply], None]] = None,
             on_progress: Optional[Callable] = None) -> None:
         self._validateManager()
-        request = self._createEmptyRequest(target)
+        request = self._createEmptyRequest(target, content_type = content_type)
         self._last_request_time = time()
         if self._manager is not None:
             reply = self._manager.put(request, data if isinstance(data, bytes) else data.encode())
diff --git a/plugins/UM3NetworkPrinting/src/Cloud/CloudOutputDevice.py b/plugins/UM3NetworkPrinting/src/Cloud/CloudOutputDevice.py
index e2957cacae..63a109cf5c 100644
--- a/plugins/UM3NetworkPrinting/src/Cloud/CloudOutputDevice.py
+++ b/plugins/UM3NetworkPrinting/src/Cloud/CloudOutputDevice.py
@@ -375,7 +375,7 @@ class CloudOutputDevice(NetworkedPrinterOutputDevice):
         # TODO: Multipart upload
         job_response = JobUploadResponse(**response.get("data"))
         Logger.log("i", "Print job created successfully: %s", job_response.__dict__)
-        self.put(job_response.upload_url, data = mesh,
+        self.put(job_response.upload_url, data = mesh, content_type = job_response.content_type,
                  on_finished = lambda r: self._onPrintJobUploaded(job_response.job_id, r),
                  on_progress = self._onUploadPrintJobProgress)