diff --git a/src/features/todos/data.rs b/src/features/todos/data.rs
index ab4a03f..1e8d2ae 100644
--- a/src/features/todos/data.rs
+++ b/src/features/todos/data.rs
@@ -47,10 +47,16 @@ impl std::fmt::Display for TodoPriority {
 pub struct TodoItem {
     pub content: String,
     pub status: TodoStatus,
+    #[serde(default = "default_priority")]
     pub priority: TodoPriority,
     pub id: String,
 }
 
+/// Default priority for backward compatibility
+fn default_priority() -> TodoPriority {
+    TodoPriority::Medium
+}
+
 /// Session todos with metadata
 #[derive(Debug, Clone)]
 pub struct SessionTodos {