diff --git a/README.md b/README.md
index 79b9636..b6b970e 100644
--- a/README.md
+++ b/README.md
@@ -273,6 +273,8 @@ require("oil").setup({
     update_on_cursor_moved = true,
     -- Maximum file size in megabytes to preview
     max_file_size_mb = 100,
+    -- Window-local options to use for preview window buffers
+    win_options = {},
   },
   -- Configuration for the floating action confirmation window
   confirmation = {
diff --git a/doc/oil.txt b/doc/oil.txt
index 3283036..44bdcfa 100644
--- a/doc/oil.txt
+++ b/doc/oil.txt
@@ -158,6 +158,8 @@ CONFIG                                                                *oil-confi
         update_on_cursor_moved = true,
         -- Maximum file size in megabytes to preview
         max_file_size_mb = 100,
+        -- Window-local options to use for preview window buffers
+        win_options = {},
       },
       -- Configuration for the floating action confirmation window
       confirmation = {