diff --git a/ChangeLog b/ChangeLog
index c1c4c7e8ce..e5d63d389c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sat Jan 31 01:09:41 2004  NAKAMURA, Hiroshi  <nakahiro@sarion.co.jp>
+
+	* lib/logger.rb: leading 0 padding of timestamp usec part.
+
 Thu Jan 29 23:11:57 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
 
 	* configure.in (DLEXT2): removed.  Ruby does not treat
diff --git a/lib/logger.rb b/lib/logger.rb
index 17d664d593..682ab3c457 100644
--- a/lib/logger.rb
+++ b/lib/logger.rb
@@ -427,7 +427,7 @@ private
 
   def format_datetime(datetime)
     if @datetime_format.nil?
-      datetime.strftime("%Y-%m-%dT%H:%M:%S.") << "%6d " % datetime.usec
+      datetime.strftime("%Y-%m-%dT%H:%M:%S.") << "%06d " % datetime.usec
     else
       datetime.strftime(@datetime_format)
     end
diff --git a/version.h b/version.h
index dbdff0bbf5..eacd61fb13 100644
--- a/version.h
+++ b/version.h
@@ -1,11 +1,11 @@
 #define RUBY_VERSION "1.9.0"
-#define RUBY_RELEASE_DATE "2004-01-29"
+#define RUBY_RELEASE_DATE "2004-01-31"
 #define RUBY_VERSION_CODE 190
-#define RUBY_RELEASE_CODE 20040129
+#define RUBY_RELEASE_CODE 20040131
 
 #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 29
+#define RUBY_RELEASE_DAY 31