diff --git a/sdk/messaging/eventgrid/azsystemevents/CHANGELOG.md b/sdk/messaging/eventgrid/azsystemevents/CHANGELOG.md
index 427383cf8a8a..30280fe8f1fe 100644
--- a/sdk/messaging/eventgrid/azsystemevents/CHANGELOG.md
+++ b/sdk/messaging/eventgrid/azsystemevents/CHANGELOG.md
@@ -1,14 +1,11 @@
 # Release History
 
-## 0.4.2 (Unreleased)
+## 0.4.2 (2024-09-19)
 
 ### Features Added
 
-### Breaking Changes
-
-### Bugs Fixed
-
-### Other Changes
+- A new field has been added to StorageLifecyclePolicyCompletedEventData:
+  - TierToColdSummary
 
 ## 0.4.1 (2024-08-20)
 
diff --git a/sdk/messaging/eventgrid/azsystemevents/models.go b/sdk/messaging/eventgrid/azsystemevents/models.go
index 3f434b0b46e9..646fc663871b 100644
--- a/sdk/messaging/eventgrid/azsystemevents/models.go
+++ b/sdk/messaging/eventgrid/azsystemevents/models.go
@@ -4838,6 +4838,9 @@ type StorageLifecyclePolicyCompletedEventData struct {
 	// REQUIRED; Execution statistics of a specific policy action in a Blob Management cycle.
 	TierToArchiveSummary *StorageLifecyclePolicyActionSummaryDetail
 
+	// REQUIRED; Execution statistics of a specific policy action in a Blob Management cycle.
+	TierToColdSummary *StorageLifecyclePolicyActionSummaryDetail
+
 	// REQUIRED; Execution statistics of a specific policy action in a Blob Management cycle.
 	TierToCoolSummary *StorageLifecyclePolicyActionSummaryDetail
 
diff --git a/sdk/messaging/eventgrid/azsystemevents/models_serde.go b/sdk/messaging/eventgrid/azsystemevents/models_serde.go
index cf7378e72856..a25bb3680874 100644
--- a/sdk/messaging/eventgrid/azsystemevents/models_serde.go
+++ b/sdk/messaging/eventgrid/azsystemevents/models_serde.go
@@ -10822,6 +10822,7 @@ func (s StorageLifecyclePolicyCompletedEventData) MarshalJSON() ([]byte, error)
 	populate(objectMap, "deleteSummary", s.DeleteSummary)
 	populate(objectMap, "scheduleTime", s.ScheduleTime)
 	populate(objectMap, "tierToArchiveSummary", s.TierToArchiveSummary)
+	populate(objectMap, "tierToColdSummary", s.TierToColdSummary)
 	populate(objectMap, "tierToCoolSummary", s.TierToCoolSummary)
 	return json.Marshal(objectMap)
 }
@@ -10844,6 +10845,9 @@ func (s *StorageLifecyclePolicyCompletedEventData) UnmarshalJSON(data []byte) er
 		case "tierToArchiveSummary":
 			err = unpopulate(val, "TierToArchiveSummary", &s.TierToArchiveSummary)
 			delete(rawMsg, key)
+		case "tierToColdSummary":
+			err = unpopulate(val, "TierToColdSummary", &s.TierToColdSummary)
+			delete(rawMsg, key)
 		case "tierToCoolSummary":
 			err = unpopulate(val, "TierToCoolSummary", &s.TierToCoolSummary)
 			delete(rawMsg, key)
diff --git a/sdk/messaging/eventgrid/azsystemevents/testdata/tsp-location.yaml b/sdk/messaging/eventgrid/azsystemevents/testdata/tsp-location.yaml
index 78f5d30a3df8..ccdf5f13c870 100644
--- a/sdk/messaging/eventgrid/azsystemevents/testdata/tsp-location.yaml
+++ b/sdk/messaging/eventgrid/azsystemevents/testdata/tsp-location.yaml
@@ -1,3 +1,3 @@
 directory: specification/eventgrid/Azure.Messaging.EventGrid.SystemEvents
-commit: 0d023bd802cde559706b5865f685a10a88516e09
+commit: 6c709e5a3325eaa862649acee2252ce1c8166042
 repo: Azure/azure-rest-api-specs