diff --git a/bin/ruby-build b/bin/ruby-build
index 54a31406..7d18ba88 100755
--- a/bin/ruby-build
+++ b/bin/ruby-build
@@ -9,7 +9,7 @@
 #   --definitions    List all built-in definitions
 #
 
-RUBY_BUILD_VERSION="20141113"
+RUBY_BUILD_VERSION="20141128"
 
 set -E
 exec 3<&2 # preserve original stderr at fd 3