diff --git a/ChangeLog b/ChangeLog
index d171954e73..109c73c208 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue Jul 17 22:17:13 2012  Tanaka Akira  <akr@fsij.org>
+
+	* lib/open-uri.rb: call io.close! for Tempfile.
+
 Tue Jul 17 16:41:32 2012  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* proc.c (rb_proc_arity): return normal value (not -n-1) if it is not
diff --git a/lib/open-uri.rb b/lib/open-uri.rb
index 6e24b40ba5..d3b26e1277 100644
--- a/lib/open-uri.rb
+++ b/lib/open-uri.rb
@@ -149,7 +149,11 @@ module OpenURI
       begin
         yield io
       ensure
-        io.close
+        if io.kind_of? Tempfile
+          io.close! 
+        else
+          io.close
+        end
       end
     else
       io