diff --git a/client/components/app/BookShelfToolbar.vue b/client/components/app/BookShelfToolbar.vue
index d512bc1b..a3879279 100644
--- a/client/components/app/BookShelfToolbar.vue
+++ b/client/components/app/BookShelfToolbar.vue
@@ -163,6 +163,14 @@ export default {
           text: this.$strings.LabelAddedAt,
           value: 'addedAt'
         },
+        {
+          text: this.$strings.LabelLastBookAdded,
+          value: 'lastBookAdded'
+        },
+        {
+          text: this.$strings.LabelLastBookUpdated,
+          value: 'lastBookUpdated'
+        },
         {
           text: this.$strings.LabelTotalDuration,
           value: 'totalDuration'
diff --git a/client/strings/en-us.json b/client/strings/en-us.json
index 1ea2fa27..5cbef6d3 100644
--- a/client/strings/en-us.json
+++ b/client/strings/en-us.json
@@ -250,6 +250,8 @@
   "LabelItem": "Item",
   "LabelLanguage": "Language",
   "LabelLanguageDefaultServer": "Default Server Language",
+  "LabelLastBookAdded": "Last Book Added",
+  "LabelLastBookUpdated": "Last Book Updated",
   "LabelLastSeen": "Last Seen",
   "LabelLastTime": "Last Time",
   "LabelLastUpdate": "Last Update",
diff --git a/server/controllers/LibraryController.js b/server/controllers/LibraryController.js
index bbc70f31..154f6f17 100644
--- a/server/controllers/LibraryController.js
+++ b/server/controllers/LibraryController.js
@@ -417,6 +417,10 @@ class LibraryController {
             return se.totalDuration
           } else if (payload.sortBy === 'addedAt') {
             return se.addedAt
+          } else if (payload.sortBy === 'lastBookUpdated') {
+            return Math.max(...(se.books).map(x => x.updatedAt), 0)
+          } else if (payload.sortBy === 'lastBookAdded') {
+            return Math.max(...(se.books).map(x => x.addedAt), 0)
           } else { // sort by name
             return this.db.serverSettings.sortingIgnorePrefix ? se.nameIgnorePrefixSort : se.name
           }