diff --git a/README.md b/README.md
index e909aac..d733a48 100644
--- a/README.md
+++ b/README.md
@@ -138,9 +138,6 @@ require('dressing').setup({
     -- Window transparency (0-100)
     winblend = 10,
 
-    -- see :help dressing-prompt
-    prompt_buffer = false,
-
     -- see :help dressing_get_config
     get_config = nil,
   },
diff --git a/doc/dressing.txt b/doc/dressing.txt
index 7db770a..642ddca 100644
--- a/doc/dressing.txt
+++ b/doc/dressing.txt
@@ -28,9 +28,6 @@ Configure dressing.nvim by calling the setup() function.
         -- Window transparency (0-100)
         winblend = 10,
     
-        -- see :help dressing-prompt
-        prompt_buffer = false,
-    
         -- see :help dressing_get_config
         get_config = nil,
       },
diff --git a/lua/dressing/config.lua b/lua/dressing/config.lua
index e32ddfb..a69ca68 100644
--- a/lua/dressing/config.lua
+++ b/lua/dressing/config.lua
@@ -21,9 +21,6 @@ local default_config = {
     -- Window transparency (0-100)
     winblend = 10,
 
-    -- see :help dressing-prompt
-    prompt_buffer = false,
-
     -- see :help dressing_get_config
     get_config = nil,
   },
diff --git a/lua/dressing/init.lua b/lua/dressing/init.lua
index 2244cf5..a8b8c23 100644
--- a/lua/dressing/init.lua
+++ b/lua/dressing/init.lua
@@ -4,6 +4,16 @@ local M = {}
 
 M.setup = function(opts)
   config.update(opts)
+  -- Wait until vim has fully started up before we show deprecation warnings
+  vim.defer_fn(function()
+    if config.input.prompt_buffer then
+      vim.notify(
+        "dressing.nvim option 'input.prompt_buffer = true' is deprecated and will be removed in a future version. If you want it to continue to be supported please file an issue with your use case: https://github.com/stevearc/dressing.nvim/issues/new",
+        vim.log.levels.WARN,
+        {}
+      )
+    end
+  end, 100)
 end
 
 local original_input