diff --git a/src/lib/features/release-plans/release-plan-milestone-store.ts b/src/lib/features/release-plans/release-plan-milestone-store.ts
index 6b94ad42a7..7dee7bf2ce 100644
--- a/src/lib/features/release-plans/release-plan-milestone-store.ts
+++ b/src/lib/features/release-plans/release-plan-milestone-store.ts
@@ -45,4 +45,11 @@ export class ReleasePlanMilestoneStore extends CRUDStore<
             .where('release_plan_definition_id', templateId)
             .delete();
     }
+
+    async updateStartTime(milestoneId: string): Promise<void> {
+        await this.db.raw(
+            `UPDATE ${TABLE} SET started_at = NOW() WHERE id = ?`,
+            [milestoneId],
+        );
+    }
 }
diff --git a/src/lib/features/release-plans/release-plan-milestone.ts b/src/lib/features/release-plans/release-plan-milestone.ts
index 6f9030dc08..9d83ece8bb 100644
--- a/src/lib/features/release-plans/release-plan-milestone.ts
+++ b/src/lib/features/release-plans/release-plan-milestone.ts
@@ -5,5 +5,6 @@ export interface ReleasePlanMilestone {
     name: string;
     sortOrder: number;
     releasePlanDefinitionId: string;
+    startedAt?: Date;
     strategies?: ReleasePlanMilestoneStrategy[];
 }