diff --git a/ChangeLog b/ChangeLog
index 0ee8c847d4..f5841b62ba 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Mon Sep  7 03:21:40 2009  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* lib/uri/common.rb (URI.escape): obsoleted.
+
+	* lib/uri/common.rb (URI,unescape): ditto.
+
 Sun Sep  6 18:13:54 2009  Koichi Sasada  <ko1@atdot.net>
 
 	* vm_insnhelper.h (CALL_SIMPLE_METHOD_IC): make a macro
diff --git a/lib/uri/common.rb b/lib/uri/common.rb
index 828b2b8a4a..9f849c03a4 100644
--- a/lib/uri/common.rb
+++ b/lib/uri/common.rb
@@ -501,6 +501,7 @@ module URI
     #   # => "@%3F@%21"
     #
     def escape(*arg)
+      warn "#{caller(1)[0]}: warning: URI.escape is obsolete" if $VERBOSE
       DEFAULT_PARSER.escape(*arg)
     end
     alias encode escape
@@ -526,6 +527,7 @@ module URI
     #   # => "http://example.com/?a=\t\r"
     #
     def unescape(*arg)
+      warn "#{caller(1)[0]}: warning: URI.unescape is obsolete" if $VERBOSE
       DEFAULT_PARSER.unescape(*arg)
     end
     alias decode unescape