diff --git a/version.h b/version.h
index 3fbd8177b7..7b8288a6e0 100644
--- a/version.h
+++ b/version.h
@@ -1,13 +1,13 @@
 #define RUBY_VERSION "1.9.1"
-#define RUBY_RELEASE_DATE "2008-12-30"
+#define RUBY_RELEASE_DATE "2009-01-01"
 #define RUBY_PATCHLEVEL 0
 
 #define RUBY_VERSION_MAJOR 1
 #define RUBY_VERSION_MINOR 9
 #define RUBY_VERSION_TEENY 1
-#define RUBY_RELEASE_YEAR 2008
-#define RUBY_RELEASE_MONTH 12
-#define RUBY_RELEASE_DAY 30
+#define RUBY_RELEASE_YEAR 2009
+#define RUBY_RELEASE_MONTH 1
+#define RUBY_RELEASE_DAY 1
 
 #ifdef RUBY_EXTERN
 RUBY_EXTERN const char ruby_version[];