diff --git a/bin/ruby-build b/bin/ruby-build
index 46ecef45..1de396bb 100755
--- a/bin/ruby-build
+++ b/bin/ruby-build
@@ -9,7 +9,7 @@
 #   --definitions    List all built-in definitions
 #
 
-RUBY_BUILD_VERSION="20141210"
+RUBY_BUILD_VERSION="20141222"
 
 set -E
 exec 3<&2 # preserve original stderr at fd 3