diff --git a/Formula/gauche.rb b/Formula/gauche.rb
index 7048f176d3..0c28fb6dc3 100644
--- a/Formula/gauche.rb
+++ b/Formula/gauche.rb
@@ -1,8 +1,8 @@
 class Gauche < Formula
   desc "R7RS Scheme implementation, developed to be a handy script interpreter"
   homepage "https://practical-scheme.net/gauche/"
-  url "https://downloads.sourceforge.net/gauche/Gauche/Gauche-0.9.8.tgz"
-  sha256 "3eb30d1051d8b48999fe46511c9f6983057735312c9832b7db13f9db140db74b"
+  url "https://downloads.sourceforge.net/gauche/Gauche/Gauche-0.9.9.tgz"
+  sha256 "4ca9325322a7efadb9680d156eb7b53521321c9ca4955c4cbe738bc2e1d7f7fb"
 
   bottle do
     sha256 "a1937af6853e5f8f057db286caa8aab4565e89e1693ef8d465b8bf287e9de6cf" => :catalina
@@ -11,13 +11,6 @@ class Gauche < Formula
     sha256 "50f5e28b01a2c73be91a0bd64a5069d0965901544186d41150b94ec736b1eadd" => :sierra
   end
 
-  # Fix build on macOS (and other libressl-based systems).
-  # https://github.com/shirok/Gauche/pull/483
-  patch do
-    url "https://github.com/shirok/Gauche/commit/891f40ae195565de803c2aaf2db27db0e11300a0.diff?full_index=1"
-    sha256 "0bbbf0bb24ba4a88a8c4895632a59f75a89c8306d58a8877c3de536cfa926f8e"
-  end
-
   def install
     system "./configure", "--prefix=#{prefix}", "--disable-dependency-tracking",
                           "--enable-multibyte=utf-8"