diff --git a/Formula/cmucl.rb b/Formula/cmucl.rb
index 50a5f4fe9f..c1884dda95 100644
--- a/Formula/cmucl.rb
+++ b/Formula/cmucl.rb
@@ -1,10 +1,10 @@
 require 'formula'
 
 class Cmucl < Formula
-  url 'http://common-lisp.net/project/cmucl/downloads/release/20b/cmucl-20b-x86-darwin.tar.bz2'
-  version '20b'
+  url 'http://common-lisp.net/project/cmucl/downloads/release/20c/cmucl-20c-x86-darwin.tar.bz2'
+  version '20c'
   homepage 'http://www.cons.org/cmucl'
-  md5 'd1128868be1098eb48caf04de9dacca4'
+  md5 '98dc8fe17a7033fdd39fab35a2147ea9'
 
   skip_clean 'bin'