diff --git a/src/library/entry.cr b/src/library/entry.cr
index 9e676c8..0d508f1 100644
--- a/src/library/entry.cr
+++ b/src/library/entry.cr
@@ -81,9 +81,17 @@ class Entry
     @title
   end
 
-  def sort_title=(sort_title : String | Nil)
+  def set_sort_title(sort_title : String | Nil, username : String)
     Storage.default.set_entry_sort_title id, sort_title
     @sort_title = sort_title
+
+    [false, true].each do |ascend|
+      [SortMethod::Auto, SortMethod::Title].each do |sort_method|
+        sorted_entries_cache_key = SortedEntriesCacheEntry.gen_key @book.id,
+          username, @book.entries, SortOptions.new(sort_method, ascend)
+        LRUCache.invalidate sorted_entries_cache_key
+      end
+    end
   end
 
   def sort_title_db
diff --git a/src/library/title.cr b/src/library/title.cr
index e264ae9..1c89731 100644
--- a/src/library/title.cr
+++ b/src/library/title.cr
@@ -300,9 +300,18 @@ class Title
     @title
   end
 
-  def sort_title=(sort_title : String | Nil)
+  def set_sort_title(sort_title : String | Nil, username : String)
     Storage.default.set_title_sort_title id, sort_title
     @sort_title = sort_title
+
+    [false, true].each do |ascend|
+      [SortMethod::Auto, SortMethod::Title].each do |sort_method|
+        sorted_entries_cache_key =
+          SortedEntriesCacheEntry.gen_key @id, username, @entries,
+            SortOptions.new(sort_method, ascend)
+        LRUCache.invalidate sorted_entries_cache_key
+      end
+    end
   end
 
   def sort_title_db
diff --git a/src/routes/api.cr b/src/routes/api.cr
index 95d29ee..28ec314 100644
--- a/src/routes/api.cr
+++ b/src/routes/api.cr
@@ -380,16 +380,17 @@ struct APIRouter
     Koa.query "name", desc: "The new sort title"
     Koa.response 200, schema: "result"
     put "/api/admin/sort_title/:tid" do |env|
+      username = get_username env
       begin
         title = (Library.default.get_title env.params.url["tid"])
           .not_nil!
         name = env.params.query["name"]?
         entry = env.params.query["eid"]?
         if entry.nil?
-          title.sort_title = name
+          title.set_sort_title name, username
         else
           eobj = title.get_entry entry
-          eobj.sort_title = name unless eobj.nil?
+          eobj.set_sort_title name, username unless eobj.nil?
         end
       rescue e
         Logger.error e