diff --git a/src/bloqade/submission/quera_api_client/api.py b/src/bloqade/submission/quera_api_client/api.py
index 825f4aacc..df9b15363 100644
--- a/src/bloqade/submission/quera_api_client/api.py
+++ b/src/bloqade/submission/quera_api_client/api.py
@@ -64,6 +64,9 @@ def _result_as_json(result: requests.Response) -> Dict:
     def _generate_headers(self, base: Optional[dict] = None) -> Dict:
         if base is None:
             header = {"Content-Type": "application/json"}
+        else:
+            header = dict(base)
+            header["Content-Type"] = "application/json"
 
         if self.hostname is not None:
             header["Host"] = self.hostname