diff --git a/services/city-service/routes_audit.py b/services/city-service/routes_audit.py
index 79076606..d787dedf 100644
--- a/services/city-service/routes_audit.py
+++ b/services/city-service/routes_audit.py
@@ -19,12 +19,14 @@ router = APIRouter(prefix="/api/v1/audit", tags=["audit"])
 # Pydantic Models
 # =============================================================================
 
+from datetime import datetime as dt
+
 class AuditEvent(BaseModel):
     id: str
     event_type: str
     payload: Optional[dict] = None
     status: Optional[str] = None
-    created_at: Optional[str] = None
+    created_at: Optional[dt] = None
     actor_id: Optional[str] = None
     target_id: Optional[str] = None
     scope: Optional[str] = None
diff --git a/services/city-service/routes_incidents.py b/services/city-service/routes_incidents.py
index 10f7ffb3..c778104c 100644
--- a/services/city-service/routes_incidents.py
+++ b/services/city-service/routes_incidents.py
@@ -19,6 +19,8 @@ router = APIRouter(prefix="/api/v1/incidents", tags=["incidents"])
 # Pydantic Models
 # =============================================================================
 
+from datetime import datetime as dt
+
 class Incident(BaseModel):
     id: str
     title: str
@@ -32,8 +34,8 @@ class Incident(BaseModel):
     reporter_name: Optional[str] = None
     assigned_to: Optional[str] = None
     assignee_name: Optional[str] = None
-    created_at: Optional[str] = None
-    updated_at: Optional[str] = None
+    created_at: Optional[dt] = None
+    updated_at: Optional[dt] = None
 
 
 class CreateIncidentRequest(BaseModel):
@@ -72,7 +74,8 @@ class IncidentHistory(BaseModel):
     id: str
     action: str
     details: Optional[dict] = None
-    created_at: Optional[str] = None
+    comment: Optional[str] = None
+    created_at: Optional[dt] = None
     actor_name: Optional[str] = None