diff --git a/panel/layout/modal.py b/panel/layout/modal.py
index a9edf9ff36..1dbc9e49d9 100644
--- a/panel/layout/modal.py
+++ b/panel/layout/modal.py
@@ -38,7 +38,7 @@ def _get_model(
         self, doc: Document, root: Optional[Model] = None,
         parent: Optional[Model] = None, comm: Optional[Comm] = None
     ) -> Model:
-        self._bokeh_model = lazy_load(
+        Modal._bokeh_model = lazy_load(
             'panel.models.modal', 'Modal', isinstance(comm, JupyterComm), root
         )
         return super()._get_model(doc, root, parent, comm)
diff --git a/panel/models/modal.py b/panel/models/modal.py
index cad556b78f..5665649dda 100644
--- a/panel/models/modal.py
+++ b/panel/models/modal.py
@@ -1,7 +1,7 @@
 from typing import Any
 
 from bokeh.core.properties import Bool
-from bokeh.events import ModelEvent
+from bokeh.events import Model, ModelEvent
 
 from ..io.resources import bundled_files
 from ..util import classproperty
@@ -44,7 +44,7 @@ def __js_skip__(cls):
 class ModalDialogEvent(ModelEvent):
     event_name = 'modal-dialog-event'
 
-    def __init__(self, model: ModelEvent, open: bool):
+    def __init__(self, model: Model | None, open: bool):
         self.open = open
         super().__init__(model=model)