diff --git a/version.h b/version.h
index b25f52001c..7fc798c23c 100644
--- a/version.h
+++ b/version.h
@@ -1,11 +1,11 @@
 #define RUBY_VERSION "1.8.1"
-#define RUBY_RELEASE_DATE "2004-03-28"
+#define RUBY_RELEASE_DATE "2004-03-31"
 #define RUBY_VERSION_CODE 181
-#define RUBY_RELEASE_CODE 20040328
+#define RUBY_RELEASE_CODE 20040331
 
 #define RUBY_VERSION_MAJOR 1
 #define RUBY_VERSION_MINOR 8
 #define RUBY_VERSION_TEENY 1
 #define RUBY_RELEASE_YEAR 2004
 #define RUBY_RELEASE_MONTH 3
-#define RUBY_RELEASE_DAY 28
+#define RUBY_RELEASE_DAY 31