diff --git a/version.h b/version.h
index 60b29c0c99..eb721734cf 100644
--- a/version.h
+++ b/version.h
@@ -1,11 +1,11 @@
 #define RUBY_VERSION "2.1.0"
-#define RUBY_RELEASE_DATE "2013-12-03"
+#define RUBY_RELEASE_DATE "2013-12-04"
 #define RUBY_PATCHLEVEL -1
 #define RUBY_BRANCH_NAME "trunk"
 
 #define RUBY_RELEASE_YEAR 2013
 #define RUBY_RELEASE_MONTH 12
-#define RUBY_RELEASE_DAY 3
+#define RUBY_RELEASE_DAY 4
 
 #include "ruby/version.h"