diff --git a/version.h b/version.h
index 07f886f389..7ce98e8c1d 100644
--- a/version.h
+++ b/version.h
@@ -1,10 +1,10 @@
 #define RUBY_VERSION "2.3.0"
-#define RUBY_RELEASE_DATE "2015-09-30"
+#define RUBY_RELEASE_DATE "2015-10-01"
 #define RUBY_PATCHLEVEL -1
 
 #define RUBY_RELEASE_YEAR 2015
-#define RUBY_RELEASE_MONTH 9
-#define RUBY_RELEASE_DAY 30
+#define RUBY_RELEASE_MONTH 10
+#define RUBY_RELEASE_DAY 1
 
 #include "ruby/version.h"