diff --git a/ChangeLog b/ChangeLog
index 1d0cfe46af..bad575dd3e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue Jul  2 14:13:11 2002  Wakou Aoyama  <wakou@ruby-lang.org>
+
+	* lib/cgi.rb (CGI#header): accept any type as value.
+
 Sun Jun 30 17:05:29 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
 
 	* configure.in (seekdir, telldir): add ac_cv_func_telldir=yes,
diff --git a/lib/cgi.rb b/lib/cgi.rb
index 836fdf2a4d..620e8aa699 100644
--- a/lib/cgi.rb
+++ b/lib/cgi.rb
@@ -486,7 +486,7 @@ status:
     end
 
     options.each{|key, value|
-      buf += key + ": " + value + EOL
+      buf += key + ": " + value.to_s + EOL
     }
 
     if defined?(MOD_RUBY)