diff --git a/ChangeLog b/ChangeLog
index 2b94260b2c..29340bfe73 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+Sat Nov 28 05:47:27 2015  Rei Odaira  <Rei.Odaira@gmail.com>
+
+	* test/ruby/test_symbol.rb (test_symbol_fstr_leak): add a warm-up
+	  code and check RSS to avoid false positive on AIX and false
+	  negative on Mac OS X. [Bug #10686]
+
+Sat Nov 28 05:47:27 2015  Rei Odaira  <Rei.Odaira@gmail.com>
+
+	* test/ruby/test_symbol.rb: avoid a false positive in AIX.
+
 Sat Nov 28 05:35:28 2015  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
 
 	* test/objspace/test_objspace.rb
diff --git a/test/ruby/test_symbol.rb b/test/ruby/test_symbol.rb
index ee29cd544f..f94b519fe7 100644
--- a/test/ruby/test_symbol.rb
+++ b/test/ruby/test_symbol.rb
@@ -263,8 +263,8 @@ class TestSymbol < Test::Unit::TestCase
   def test_symbol_fstr_leak
     bug10686 = '[ruby-core:67268] [Bug #10686]'
     x = 0
-    assert_no_memory_leak([], '', <<-"end;", bug10686, limit: 1.65)
-      200_000.times { |i| i.to_s.to_sym }
+    assert_no_memory_leak([], '200_000.times { |i| i.to_s.to_sym }; GC.start', <<-"end;", bug10686, limit: 1.71, rss: true)
+      200_000.times { |i| (i + 200_000).to_s.to_sym }
     end;
   end
 
diff --git a/version.h b/version.h
index 9b9aa490d0..5aa0493ce2 100644
--- a/version.h
+++ b/version.h
@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.2.4"
 #define RUBY_RELEASE_DATE "2015-11-28"
-#define RUBY_PATCHLEVEL 202
+#define RUBY_PATCHLEVEL 203
 
 #define RUBY_RELEASE_YEAR 2015
 #define RUBY_RELEASE_MONTH 11