diff --git a/ipylab/asyncwidget.py b/ipylab/asyncwidget.py
index bff8fde..bd33b93 100644
--- a/ipylab/asyncwidget.py
+++ b/ipylab/asyncwidget.py
@@ -373,11 +373,11 @@ def execute_method(
             just_coro=just_coro,
         )
 
-    def get_attribute(self, path: str, *, transform: TransformType = TransformMode.raw, just_coro=True):
+    def get_attribute(self, path: str, *, transform: TransformType = TransformMode.raw, just_coro=False):
         """A serialized version of the attribute relative to this object."""
         return self.execute_method("getAttribute", path, transform=transform, just_coro=just_coro)
 
-    def list_methods(self, path: str = "", *, depth=2, skip_hidden=True, just_coro=True):
+    def list_methods(self, path: str = "", *, depth=2, skip_hidden=True, just_coro=False):
         """Get a list of methods belonging to the object 'path' of the Frontend instance.
         depth: The depth in the object inheritance to search for methods.
         """
diff --git a/ipylab/widgets.py b/ipylab/widgets.py
index d739870..38b1157 100644
--- a/ipylab/widgets.py
+++ b/ipylab/widgets.py
@@ -63,7 +63,7 @@ def addToShell(
         mode: InsertMode = InsertMode.split_right,
         rank: int | None = None,
         ref: DisposableConnection | str = "",
-        just_coro=True,
+        just_coro=False,
         **options,
     ):
         """Add this panel to the shell."""