diff --git a/Formula/ruby-build.rb b/Formula/ruby-build.rb
index f004194302..410809cb55 100644
--- a/Formula/ruby-build.rb
+++ b/Formula/ruby-build.rb
@@ -1,8 +1,8 @@
 class RubyBuild < Formula
   desc "Install various Ruby versions and implementations"
   homepage "https://github.com/rbenv/ruby-build"
-  url "https://github.com/rbenv/ruby-build/archive/v20191205.tar.gz"
-  sha256 "d8ffe806a215b3afacead72e766f293ce380c78a143911b84cdb5f33e20a5284"
+  url "https://github.com/rbenv/ruby-build/archive/v20191223.tar.gz"
+  sha256 "97f9cb390573b1910d12faacaca85904e9002d6911c1d893287f9dd77910d99f"
   head "https://github.com/rbenv/ruby-build.git"
 
   bottle :unneeded