diff --git a/themes/grid/layout/partial/post/list.ejs b/themes/grid/layout/partial/post/list.ejs
index 310ef0d..8c538c3 100644
--- a/themes/grid/layout/partial/post/list.ejs
+++ b/themes/grid/layout/partial/post/list.ejs
@@ -8,8 +8,8 @@
             </h3>
             <div class="flex row-a col-n rm-start-a">
                 <div class="uk-text-meta mr-1">发布：<%= date(post.date, "YYYY-MM-DD HH:mm") %></div>
-                <% let updateValid = typeof(post.update) == 'string' %>
-                <div class="uk-text-meta mr-1">更新：<%= date(updateValid ? post.update : post.date, "YYYY-MM-DD HH:mm") %></div>
+                <% const updateValid = post.updated.isValid() %>
+                <div class="uk-text-meta mr-1">更新：<%= date(updateValid ? post.updated : post.date, "YYYY-MM-DD HH:mm") %></div>
                 <% if (post.categories.length> 0) { %>
                     <div class="uk-text-meta">知识分类：
                         <%- list_categories(post.categories, {
diff --git a/themes/grid/layout/post.ejs b/themes/grid/layout/post.ejs
index 4f4565d..67f1cdb 100644
--- a/themes/grid/layout/post.ejs
+++ b/themes/grid/layout/post.ejs
@@ -9,8 +9,9 @@
                     </span>
                 </h3>
                 <div class="flex row-w row-m col-n rm-start-a">
-                    <div class="uk-text-meta mr-1">最后更新：<%= date(page.date, "YYYY-MM-DD HH:mm" ) %>
-                    </div>
+                    <div class="uk-text-meta mr-1">发布时间：<%= date(page.date, "YYYY-MM-DD HH:mm" ) %></div>
+                    <% const validUpdate = page.updated.isValid() %>
+                    <div class="uk-text-meta mr-1">最后更新：<%= date(validUpdate ? page.updated : page.date, "YYYY-MM-DD HH:mm") %></div>
                     <% if (page.categories.length> 0) { %>
                         <div class="uk-text-meta">知识分类：
                             <%- list_categories(page.categories, {