diff --git a/apps/ui/src/components/nodes/Code.tsx b/apps/ui/src/components/nodes/Code.tsx
index 0503dfe2..59e2998d 100644
--- a/apps/ui/src/components/nodes/Code.tsx
+++ b/apps/ui/src/components/nodes/Code.tsx
@@ -73,7 +73,7 @@ function Timer({ lastExecutedAt }) {
         padding: "5px",
       }}
     >
-      Last run: {timeDifference(new Date(), lastExecutedAt)}
+      Last run: {timeDifference(new Date(), new Date(lastExecutedAt))}
     </Box>
   );
 }
diff --git a/apps/ui/src/lib/store/podSlice.ts b/apps/ui/src/lib/store/podSlice.ts
index 40e9267f..7cfb45fa 100644
--- a/apps/ui/src/lib/store/podSlice.ts
+++ b/apps/ui/src/lib/store/podSlice.ts
@@ -1,24 +1,8 @@
 import { createStore, StateCreator, StoreApi } from "zustand";
 import { produce } from "immer";
 
-import * as Y from "yjs";
-
 import { Pod, MyState } from ".";
 
-type PodResult = {
-  exec_count?: number;
-  last_exec_end?: boolean;
-  result: {
-    type?: string;
-    html?: string;
-    text?: string;
-    image?: string;
-  }[];
-  running?: boolean;
-  lastExecutedAt?: Date;
-  error?: { ename: string; evalue: string; stacktrace: string[] } | null;
-};
-
 export interface PodSlice {
   // local reactive variable for pod result
   podNames: Record<string, string>;
diff --git a/apps/ui/src/lib/store/runtimeSlice.ts b/apps/ui/src/lib/store/runtimeSlice.ts
index 215dd973..c6c6967f 100644
--- a/apps/ui/src/lib/store/runtimeSlice.ts
+++ b/apps/ui/src/lib/store/runtimeSlice.ts
@@ -160,7 +160,6 @@ export type RuntimeInfo = {
 
 type PodResult = {
   exec_count?: number;
-  last_exec_end?: boolean;
   data: {
     type: string;
     html?: string;
@@ -168,7 +167,7 @@ type PodResult = {
     image?: string;
   }[];
   running?: boolean;
-  lastExecutedAt?: Date;
+  lastExecutedAt?: number;
   error?: { ename: string; evalue: string; stacktrace: string[] } | null;
 };
 
diff --git a/apps/yjs/src/yjs-runtime.ts b/apps/yjs/src/yjs-runtime.ts
index 432dba43..e3047940 100644
--- a/apps/yjs/src/yjs-runtime.ts
+++ b/apps/yjs/src/yjs-runtime.ts
@@ -5,7 +5,6 @@ import { spawnRuntime, killRuntime } from "./runtime";
 
 type PodResult = {
   exec_count?: number;
-  last_exec_end?: boolean;
   data: {
     type: string;
     html?: string;
@@ -13,7 +12,7 @@ type PodResult = {
     image?: string;
   }[];
   running?: boolean;
-  lastExecutedAt?: Date;
+  lastExecutedAt?: number;
   error?: { ename: string; evalue: string; stacktrace: string[] } | null;
 };
 
@@ -111,7 +110,7 @@ export async function setupRuntimeSocket({
           let { podId, result, count } = payload;
           const oldresult: PodResult = resultMap.get(podId) || { data: [] };
           oldresult.running = false;
-          oldresult.lastExecutedAt = new Date();
+          oldresult.lastExecutedAt = Date.now();
           oldresult.exec_count = count;
           resultMap.set(podId, oldresult);
         }