diff --git a/README.md b/README.md
index a149820..027c0a8 100644
--- a/README.md
+++ b/README.md
@@ -195,6 +195,13 @@ vim's `completeopt` setting. Warning: Be careful when changing this value.
 Default: `menu,menuone,noselect`
 
 
+### formatting.deprecated (type: boolean)
+
+Specify deprecated candidate should be marked as deprecated or not.
+
+Default: `true`
+
+
 ### formatting.format (type: fun(entry: cmp.Entry, vim_item: vim.CompletedItem): vim.CompletedItem)
 
 A function to customize completion menu.
diff --git a/lua/cmp/config/default.lua b/lua/cmp/config/default.lua
index d2e830a..9635441 100644
--- a/lua/cmp/config/default.lua
+++ b/lua/cmp/config/default.lua
@@ -51,6 +51,7 @@ return function()
     mapping = {},
 
     formatting = {
+      deprecated = true,
       format = function(_, vim_item)
         return vim_item
       end
diff --git a/lua/cmp/entry.lua b/lua/cmp/entry.lua
index d4bb146..8623c74 100644
--- a/lua/cmp/entry.lua
+++ b/lua/cmp/entry.lua
@@ -204,8 +204,10 @@ entry.get_vim_item = function(self, suggest_offset)
     end
 
     -- deprecated
-    if completion_item.deprecated or vim.tbl_contains(completion_item.tags or {}, types.lsp.CompletionItemTag.Deprecated) then
-      abbr = str.strikethrough(abbr)
+    if config.get().formatting.deprecated then
+      if completion_item.deprecated or vim.tbl_contains(completion_item.tags or {}, types.lsp.CompletionItemTag.Deprecated) then
+        abbr = str.strikethrough(abbr)
+      end
     end
 
     -- append delta text
diff --git a/lua/cmp/types/cmp.lua b/lua/cmp/types/cmp.lua
index d578d1f..2435e88 100644
--- a/lua/cmp/types/cmp.lua
+++ b/lua/cmp/types/cmp.lua
@@ -75,6 +75,7 @@ cmp.ScrollDirection.Down = 'down'
 ---@field public comparators function[]
 
 ---@class cmp.FormattingConfig
+---@field public deprecated boolean
 ---@field public format fun(entry: cmp.Entry, vim_item: vim.CompletedItem): vim.CompletedItem
 
 ---@class cmp.SnippetConfig