diff --git a/gateway/app/routers/edits.py b/gateway/app/routers/edits.py
index 45265a3..69c9abc 100644
--- a/gateway/app/routers/edits.py
+++ b/gateway/app/routers/edits.py
@@ -247,7 +247,7 @@ def apply_edits_impl(document_id: str, request: EditsRequest):
         pdfengine = engine.require()
         doc = doc_info["doc_instance"]
 
-        req_dict = request.model_dump()
+        req_dict = request.model_dump(exclude_none=True)
         for op in req_dict.get("operations", []):
             if op.get("type") == "image_overlay":
                 img_data_str = op["data"].get("imageData", "")