diff --git a/ChangeLog b/ChangeLog
index ff2a80b2ed..8ead7076b5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Tue Aug  2 01:33:11 2016  Shugo Maeda  <shugo@ruby-lang.org>
+
+	* test/ruby/test_refinement.rb: skip
+	  test_prepend_after_refine_wb_miss on ARM or MIPS.
+	  [ruby-core:76031] [Bug #12491]
+
 Sat Jul 30 12:23:29 2016  Shugo Maeda  <shugo@ruby-lang.org>
 
 	* vm_args.c (vm_caller_setup_arg_block): disable symbol block
diff --git a/test/ruby/test_refinement.rb b/test/ruby/test_refinement.rb
index 99987da988..f674783a01 100644
--- a/test/ruby/test_refinement.rb
+++ b/test/ruby/test_refinement.rb
@@ -783,6 +783,9 @@ class TestRefinement < Test::Unit::TestCase
   eval PrependAfterRefine_CODE
 
   def test_prepend_after_refine_wb_miss
+    if /\A(arm|mips)/ =~ RUBY_PLATFORM
+      skip "too slow cpu"
+    end
     assert_normal_exit %Q{
       GC.stress = true
       10.times{
diff --git a/version.h b/version.h
index 7342fe910a..8cda89905e 100644
--- a/version.h
+++ b/version.h
@@ -1,10 +1,10 @@
 #define RUBY_VERSION "2.3.2"
-#define RUBY_RELEASE_DATE "2016-07-30"
-#define RUBY_PATCHLEVEL 142
+#define RUBY_RELEASE_DATE "2016-08-02"
+#define RUBY_PATCHLEVEL 143
 
 #define RUBY_RELEASE_YEAR 2016
-#define RUBY_RELEASE_MONTH 7
-#define RUBY_RELEASE_DAY 30
+#define RUBY_RELEASE_MONTH 8
+#define RUBY_RELEASE_DAY 2
 
 #include "ruby/version.h"