diff --git a/ChangeLog b/ChangeLog
index 8ded192543..10776b05d2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+Sat Jan  3 21:17:58 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* thread.c (rb_thread_variable_get): fix dynamic symbol keys.
+	  rb_check_id() returns non-zero only for static symbols, whereas
+	  thread local variable keys can be dynamic symbols.
+	  [ruby-core:67185] [Bug #10667]
+
 Thu Jan  1 08:29:55 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* cygwin/GNUmakefile.in (EXTOBJS): override to add resource files
diff --git a/test/-ext-/symbol/test_inadvertent_creation.rb b/test/-ext-/symbol/test_inadvertent_creation.rb
index abcb5d9ccb..b180d08b04 100644
--- a/test/-ext-/symbol/test_inadvertent_creation.rb
+++ b/test/-ext-/symbol/test_inadvertent_creation.rb
@@ -202,7 +202,13 @@ module Test_Symbol
       Thread.current.thread_variable_set(:test, nil)
       name = noninterned_name
       assert_nil(Thread.current.thread_variable_get(name))
-      assert_not_interned(name)
+      assert_not_pinneddown(name)
+    end
+
+    def test_thread_variable_set
+      name = noninterned_name
+      Thread.current.thread_variable_set(name, 42)
+      assert_not_pinneddown(name)
     end
 
     def test_thread_variable?
diff --git a/test/ruby/test_thread.rb b/test/ruby/test_thread.rb
index fba4737009..87d5f0f79e 100644
--- a/test/ruby/test_thread.rb
+++ b/test/ruby/test_thread.rb
@@ -432,6 +432,16 @@ class TestThread < Test::Unit::TestCase
     end
   end
 
+  def test_thread_local_dynamic_symbol
+    bug10667 = '[ruby-core:67185] [Bug #10667]'
+    t = Thread.new {}.join
+    key_str = "foo#{rand}"
+    key_sym = key_str.to_sym
+    t.thread_variable_set(key_str, "bar")
+    assert_equal("bar", t.thread_variable_get(key_str), "#{bug10667}: string key")
+    assert_equal("bar", t.thread_variable_get(key_sym), "#{bug10667}: symbol key")
+  end
+
   def test_select_wait
     assert_nil(IO.select(nil, nil, nil, 0.001))
     t = Thread.new do
diff --git a/thread.c b/thread.c
index 9ceb441f8e..5d8ac7eb04 100644
--- a/thread.c
+++ b/thread.c
@@ -2936,11 +2936,9 @@ static VALUE
 rb_thread_variable_get(VALUE thread, VALUE key)
 {
     VALUE locals;
-    ID id = rb_check_id(&key);
 
-    if (!id) return Qnil;
     locals = rb_ivar_get(thread, id_locals);
-    return rb_hash_aref(locals, ID2SYM(id));
+    return rb_hash_aref(locals, rb_to_symbol(key));
 }
 
 /*
diff --git a/version.h b/version.h
index ee1861d259..add31dddbf 100644
--- a/version.h
+++ b/version.h
@@ -1,10 +1,10 @@
 #define RUBY_VERSION "2.2.0"
-#define RUBY_RELEASE_DATE "2015-01-01"
-#define RUBY_PATCHLEVEL 5
+#define RUBY_RELEASE_DATE "2015-01-03"
+#define RUBY_PATCHLEVEL 6
 
 #define RUBY_RELEASE_YEAR 2015
 #define RUBY_RELEASE_MONTH 1
-#define RUBY_RELEASE_DAY 1
+#define RUBY_RELEASE_DAY 3
 
 #include "ruby/version.h"