diff --git a/lib/galaxy/model/__init__.py b/lib/galaxy/model/__init__.py
index a9b9d3daf3ee..f119ae5c4908 100644
--- a/lib/galaxy/model/__init__.py
+++ b/lib/galaxy/model/__init__.py
@@ -259,7 +259,7 @@ def __declare_last__(cls):
 
 
 class RepresentById:
-    id: int
+    id: Mapped[int]
 
     def __repr__(self):
         try:
@@ -418,7 +418,7 @@ def get_display_name(self):
 
 
 class UsesCreateAndUpdateTime:
-    update_time: DateTime
+    update_time: Mapped[Optional[DateTime]]
 
     @property
     def seconds_since_updated(self):