diff --git a/frontend/src/store/runtimeStore.js b/frontend/src/store/runtimeStore.js
index 5f864e8..0e58097 100644
--- a/frontend/src/store/runtimeStore.js
+++ b/frontend/src/store/runtimeStore.js
@@ -87,4 +87,8 @@ export const useRuntimeStore = create((set) => ({
   isRuntimeConfigSaving: false,
   setRuntimeConfigFeedback: (runtimeConfigFeedback) => set({ runtimeConfigFeedback }),
   setIsRuntimeConfigSaving: (isRuntimeConfigSaving) => set({ isRuntimeConfigSaving }),
+
+  // Last day history (for replay)
+  lastDayHistory: [],
+  setLastDayHistory: (lastDayHistory) => set({ lastDayHistory }),
 }));