diff --git a/web/src/components/MemoActionMenu.tsx b/web/src/components/MemoActionMenu.tsx
index d09b0275..111a0a11 100644
--- a/web/src/components/MemoActionMenu.tsx
+++ b/web/src/components/MemoActionMenu.tsx
@@ -53,7 +53,7 @@ const MemoActionMenu = (props: Props) => {
   const handleEditMemoClick = () => {
     showMemoEditorDialog({
       memoName: memo.name,
-      cacheKey: `${memo.name}-${memo.displayTime}`,
+      cacheKey: `${memo.name}-${memo.updateTime}`,
     });
   };