diff --git a/spacy/training/corpus.py b/spacy/training/corpus.py
index 063d80a95..1edc4329b 100644
--- a/spacy/training/corpus.py
+++ b/spacy/training/corpus.py
@@ -41,7 +41,7 @@ def create_docbin_reader(
 
 @util.registry.readers("spacy.JsonlCorpus.v1")
 def create_jsonl_reader(
-    path: Path, min_length: int = 0, max_length: int = 0, limit: int = 0
+    path: Optional[Path], min_length: int = 0, max_length: int = 0, limit: int = 0
 ) -> Callable[["Language"], Iterable[Doc]]:
     return JsonlCorpus(path, min_length=min_length, max_length=max_length, limit=limit)