diff --git a/metrics/models.go b/metrics/models.go
index 6ec33c683..fe3d7ab53 100644
--- a/metrics/models.go
+++ b/metrics/models.go
@@ -257,6 +257,12 @@ type TestRunLegacy struct {
 	// Time when the test run metadata was first created.
 	CreatedAt time.Time `json:"created_at"`
 
+	// Time when the test run started.
+	TimeStart time.Time `json:"time_start"`
+
+	// Time when the test run ended.
+	TimeEnd time.Time `json:"time_end"`
+
 	// URL for raw results JSON object. Resembles the JSON output of the
 	// wpt report tool.
 	RawResultsURL string `json:"raw_results_url"`