diff --git a/config.json b/config.json
index b819a1c..1d86c56 100644
--- a/config.json
+++ b/config.json
@@ -86,6 +86,7 @@
     "submission": {
         "timeout": 30,
         "file_size": 15728640,
+        "tmp_size": 15728640,
         "mime_types": [
             "image/png",
             "image/gif",