diff --git a/ChangeLog b/ChangeLog
index 083f4e6b53..be006080d9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sun Jun 16 16:04:38 2013  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* tool/config_files.rb: use URI.read to allow it runs with Ruby 1.8.5.
+
 Sun Jun 16 14:32:25 2013  Tanaka Akira  <akr@fsij.org>
 
 	* bignum.c (bary_pack) Extracted from rb_integer_pack_internal.
diff --git a/tool/config_files.rb b/tool/config_files.rb
index 1551589bf9..815e97a222 100644
--- a/tool/config_files.rb
+++ b/tool/config_files.rb
@@ -2,7 +2,7 @@ require 'open-uri'
 
 ConfigFiles = "http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=%s;hb=HEAD"
 def ConfigFiles.download(name, dir = nil)
-  data = open(self % name, &:read)
+  data = URI.read(self % name)
   file = dir ? File.join(dir, name) : name
   open(file, "wb", 0755) {|f| f.write(data)}
 end