From 9b33210241de67c38229b263a5f87ff94c94bfcf Mon Sep 17 00:00:00 2001
From: Patrick Linnane <patrick@linnane.io>
Date: Tue, 13 Aug 2024 13:30:49 -0600
Subject: [PATCH] Update io.rb

Co-authored-by: Bo Anderson <mail@boanderson.me>
---
 Library/Homebrew/extend/io.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Library/Homebrew/extend/io.rb b/Library/Homebrew/extend/io.rb
index 55db17651e..a6eb7d4b70 100644
--- a/Library/Homebrew/extend/io.rb
+++ b/Library/Homebrew/extend/io.rb
@@ -2,7 +2,7 @@
 # frozen_string_literal: true
 
 class IO
-  sig { params(sep: BasicObject).returns(String) }
+  sig { params(sep: String).returns(String) }
   def readline_nonblock(sep = $INPUT_RECORD_SEPARATOR)
     line = +""
     buffer = +""