diff --git a/src/overhaul_gantt/service.py b/src/overhaul_gantt/service.py
index 91cca87..a69c3df 100644
--- a/src/overhaul_gantt/service.py
+++ b/src/overhaul_gantt/service.py
@@ -96,7 +96,7 @@ async def get_gantt_performance_chart(*, spreadsheet_id = "1gZXuwA97zU1v4QBv56wK
 
             results.append({
                 "day": day,
-                "time": date,
+                "date": date,
                 "plan": plan,
                 "actual": actual
             })