diff --git a/src/aeros_simulation/schema.py b/src/aeros_simulation/schema.py
index 181c5a0..0e65b1e 100644
--- a/src/aeros_simulation/schema.py
+++ b/src/aeros_simulation/schema.py
@@ -84,6 +84,7 @@ class SimulationData(BaseModel):
     simulation_name: str
     status: str
     schematic_name: str
+    created_at: datetime
 
 
 class SimulationPagination(Pagination):