diff --git a/lib/crewai/src/crewai/events/base_events.py b/lib/crewai/src/crewai/events/base_events.py
index cfeb1b32e..7148e5e1d 100644
--- a/lib/crewai/src/crewai/events/base_events.py
+++ b/lib/crewai/src/crewai/events/base_events.py
@@ -61,6 +61,8 @@ class BaseEvent(BaseModel):
 
     event_id: str = Field(default_factory=lambda: str(uuid.uuid4()))
     parent_event_id: str | None = None
+    previous_event_id: str | None = None
+    triggered_by_event_id: str | None = None
     emission_sequence: int | None = None
 
     def to_json(self, exclude: set[str] | None = None) -> Serializable: