diff --git a/ChangeLog b/ChangeLog
index 5f80e1cf69..6cf3852e82 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Jan 31 14:27:22 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* test/ruby/envutil.rb (EnvUtil.invoke_ruby): yield also child pid
+	  in block form.
+
 Mon Jan 30 19:08:19 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* vm_eval.c (vm_call0): should pass block to enumerators.  patched
diff --git a/test/ruby/envutil.rb b/test/ruby/envutil.rb
index 45f9c7658f..ef5f65c747 100644
--- a/test/ruby/envutil.rb
+++ b/test/ruby/envutil.rb
@@ -55,7 +55,7 @@ module EnvUtil
     out_c.close if capture_stdout
     err_c.close if capture_stderr && capture_stderr != :merge_to_stdout
     if block_given?
-      return yield in_p, out_p, err_p
+      return yield in_p, out_p, err_p, pid
     else
       th_stdout = Thread.new { out_p.read } if capture_stdout
       th_stderr = Thread.new { err_p.read } if capture_stderr && capture_stderr != :merge_to_stdout