diff --git a/version.h b/version.h
index 75a41de651..9d312ecc5e 100644
--- a/version.h
+++ b/version.h
@@ -1,11 +1,11 @@
 #define RUBY_VERSION "2.3.0"
-#define RUBY_RELEASE_DATE "2014-12-30"
+#define RUBY_RELEASE_DATE "2014-12-31"
 #define RUBY_PATCHLEVEL -1
 #define RUBY_BRANCH_NAME "trunk"
 
 #define RUBY_RELEASE_YEAR 2014
 #define RUBY_RELEASE_MONTH 12
-#define RUBY_RELEASE_DAY 30
+#define RUBY_RELEASE_DAY 31
 
 #include "ruby/version.h"