diff --git a/Formula/smlsharp.rb b/Formula/smlsharp.rb
index aaa02fa..53dc948 100644
--- a/Formula/smlsharp.rb
+++ b/Formula/smlsharp.rb
@@ -1,34 +1,27 @@
 class Smlsharp < Formula
   desc "Standard ML compiler with practical extensions"
-  homepage "http://www.pllab.riec.tohoku.ac.jp/smlsharp/"
+  homepage "https://smlsharp.github.io/"
   url "https://github.com/smlsharp/smlsharp/releases/download/v4.0.0/smlsharp-4.0.0.tar.gz"
   sha256 "0b44fb1f369f7cfced197c68f0d3102e940dbe5288adc3bdf618a5a3ec3165db"
   version "4.0.0"
-  license "BSD-3-Clause"
+  license "MIT"
+  revision 1
 
   bottle do
     root_url "https://github.com/smlsharp/repos/raw/main/homebrew"
-    sha256 big_sur: "0fbaa81e6c65e49ca2a9f104e6415d9d71c216c25a570c5189ba93a32b437f0e"
+    sha256 big_sur: "39998a174c53d856b267e531645c0dc81337991af181e60efe4be6a4e253b6e3"
   end
 
-  depends_on "llvm@9"
+  depends_on "llvm@11"
   depends_on "massivethreads"
   depends_on "gmp"
   depends_on "xz" => :build
 
   def install
-    opt_llvm = Formula["llvm@9"].opt_prefix
-    opt_llvm_bin = Formula["llvm@9"].opt_bin
+    opt_llvm = Formula["llvm@11"].opt_prefix
     system "./configure", "--prefix=#{prefix}", "--with-llvm=#{opt_llvm}"
     system "make", "stage"
     system "make", "all"
-    inreplace "src/config.mk" do |s|
-      s.sub! /^LLC =.*$/, "LLC = #{opt_llvm_bin}/llc"
-      s.sub! /^OPT =.*$/, "OPT = #{opt_llvm_bin}/opt"
-      s.sub! /^LLVM_AS =.*$/, "LLVM_AS = #{opt_llvm_bin}/llvm-as"
-      s.sub! /^LLVM_DIS =.*$/, "LLVM_DIS = #{opt_llvm_bin}/llvm-dis"
-    end
-    system "make", "-t"
     system "make", "install"
   end