diff --git a/version.h b/version.h
index eacd61fb13..dd05386508 100644
--- a/version.h
+++ b/version.h
@@ -1,11 +1,11 @@
 #define RUBY_VERSION "1.9.0"
-#define RUBY_RELEASE_DATE "2004-01-31"
+#define RUBY_RELEASE_DATE "2004-02-01"
 #define RUBY_VERSION_CODE 190
-#define RUBY_RELEASE_CODE 20040131
+#define RUBY_RELEASE_CODE 20040201
 
 #define RUBY_VERSION_MAJOR 1
 #define RUBY_VERSION_MINOR 9
 #define RUBY_VERSION_TEENY 0
 #define RUBY_RELEASE_YEAR 2004
-#define RUBY_RELEASE_MONTH 1
-#define RUBY_RELEASE_DAY 31
+#define RUBY_RELEASE_MONTH 2
+#define RUBY_RELEASE_DAY 1