diff --git a/spacy/language.py b/spacy/language.py
index 73e1b8629..ae3809728 100644
--- a/spacy/language.py
+++ b/spacy/language.py
@@ -1346,9 +1346,9 @@ class Language:
 
         get_examples (Callable[[], Iterable[Example]]): Optional function that
             returns gold-standard Example objects.
-        labels (Dict[str, Any]): Labels to pass to pipe initialization, using
-            the names of the pipes as keys. Overrides labels that are in the
-            model configuration.
+        labels (Optional[Dict[str, Any]]): Labels to pass to pipe initialization,
+            using the names of the pipes as keys. Overrides labels that are in
+            the model configuration.
         sgd (Optional[Optimizer]): An optimizer to use for updates. If not
             provided, will be created using the .create_optimizer() method.
         RETURNS (thinc.api.Optimizer): The optimizer.