diff --git a/version.h b/version.h
index 94422d5661..9fff939e80 100644
--- a/version.h
+++ b/version.h
@@ -1,11 +1,11 @@
 #define RUBY_VERSION "1.8.1"
-#define RUBY_RELEASE_DATE "2003-12-14"
+#define RUBY_RELEASE_DATE "2003-12-15"
 #define RUBY_VERSION_CODE 181
-#define RUBY_RELEASE_CODE 20031214
+#define RUBY_RELEASE_CODE 20031215
 
 #define RUBY_VERSION_MAJOR 1
 #define RUBY_VERSION_MINOR 8
 #define RUBY_VERSION_TEENY 1
 #define RUBY_RELEASE_YEAR 2003
 #define RUBY_RELEASE_MONTH 12
-#define RUBY_RELEASE_DAY 14
+#define RUBY_RELEASE_DAY 15