diff --git a/src/labthings/server/responses.py b/src/labthings/server/responses.py
index 16a61841..d0c57fd3 100644
--- a/src/labthings/server/responses.py
+++ b/src/labthings/server/responses.py
@@ -1,4 +1,4 @@
-from flask import send_file, abort, make_response
+from flask import Response, send_file, abort, make_response
 
 
-__all__ = ["send_file", "abort", "make_response"]
+__all__ = ["Response", "send_file", "abort", "make_response"]