diff --git a/ChangeLog b/ChangeLog
index 9b8870d664..b0938060ac 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Fri Feb 27 20:55:42 2015  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
+
+	* lib/rake: Update to rake (9237e74), typo fix and remove needless
+	  private syntax.
+	* test/rake: ditto.
+
 Fri Feb 27 17:06:44 2015  Koichi Sasada  <ko1@atdot.net>
 
 	* vm_core.h: define vm_svar_index.
diff --git a/lib/rake/dsl_definition.rb b/lib/rake/dsl_definition.rb
index 26f4ca828c..4c57c1eb9f 100644
--- a/lib/rake/dsl_definition.rb
+++ b/lib/rake/dsl_definition.rb
@@ -7,7 +7,7 @@ module Rake
   # DSL is a module that provides #task, #desc, #namespace, etc.  Use this
   # when you'd like to use rake outside the top level scope.
   #
-  # For a Rakefile you run from the comamnd line this module is automatically
+  # For a Rakefile you run from the command line this module is automatically
   # included.
 
   module DSL
diff --git a/lib/rake/task_manager.rb b/lib/rake/task_manager.rb
index cbb9f5ee2f..d9b4d85e75 100644
--- a/lib/rake/task_manager.rb
+++ b/lib/rake/task_manager.rb
@@ -291,9 +291,6 @@ module Rake
       result.flatten
     end
 
-
-    private
-
     # Return the current description, clearing it in the process.
     def get_description(task)
       desc = @last_description
diff --git a/lib/rake/testtask.rb b/lib/rake/testtask.rb
index 2daa589634..02fbe5e92b 100644
--- a/lib/rake/testtask.rb
+++ b/lib/rake/testtask.rb
@@ -62,7 +62,7 @@ module Rake
     #
     attr_accessor :loader
 
-    # Array of commandline options to pass to ruby when running test loader.
+    # Array of command line options to pass to ruby when running test loader.
     attr_accessor :ruby_opts
 
     # Description of the test task. (default is 'Run tests')
diff --git a/test/rake/test_rake_application_options.rb b/test/rake/test_rake_application_options.rb
index 37adfacd7d..1914240590 100644
--- a/test/rake/test_rake_application_options.rb
+++ b/test/rake/test_rake_application_options.rb
@@ -198,7 +198,7 @@ class TestRakeApplicationOptions < Rake::TestCase
   def test_quiet
     Rake::FileUtilsExt.verbose_flag = true
     flags('--quiet', '-q') do |opts|
-      assert ! Rake::FileUtilsExt.verbose_flag, "verbose flag shoud be false"
+      assert ! Rake::FileUtilsExt.verbose_flag, "verbose flag should be false"
       assert ! opts.silent, "should not be silent"
     end
   end
diff --git a/test/rake/test_rake_linked_list.rb b/test/rake/test_rake_linked_list.rb
index 10957fba6d..32d7306268 100644
--- a/test/rake/test_rake_linked_list.rb
+++ b/test/rake/test_rake_linked_list.rb
@@ -57,13 +57,13 @@ class TestLinkedList < Rake::TestCase
     refute_equal short, list
   end
 
-  def test_converstion_to_string
+  def test_conversion_to_string
     list = LinkedList.make(:one, :two, :three)
     assert_equal "LL(one, two, three)", list.to_s
     assert_equal "LL()", LinkedList.make().to_s
   end
 
-  def test_converstion_with_inspect
+  def test_conversion_with_inspect
     list = LinkedList.make(:one, :two, :three)
     assert_equal "LL(:one, :two, :three)", list.inspect
     assert_equal "LL()", LinkedList.make().inspect
diff --git a/test/rake/test_rake_path_map.rb b/test/rake/test_rake_path_map.rb
index 038ba1f9a7..98e8df0620 100644
--- a/test/rake/test_rake_path_map.rb
+++ b/test/rake/test_rake_path_map.rb
@@ -152,11 +152,11 @@ class TestRakePathMap < Rake::TestCase
       "Your file extension is '.rb'",
       "dir/abc.rb".pathmap("Your file extension is '%x'"))
     assert_equal(
-      "bin/org/onstepback/proj/A.class",
-      "src/org/onstepback/proj/A.java".pathmap("%{src,bin}d/%n.class"))
+      "bin/org/onestepback/proj/A.class",
+      "src/org/onestepback/proj/A.java".pathmap("%{src,bin}d/%n.class"))
     assert_equal(
-      "src_work/bin/org/onstepback/proj/A.class",
-      "src_work/src/org/onstepback/proj/A.java".
+      "src_work/bin/org/onestepback/proj/A.class",
+      "src_work/src/org/onestepback/proj/A.java".
         pathmap('%{\bsrc\b,bin}X.class'))
     assert_equal(
       ".depends.bak",
diff --git a/test/rake/test_rake_task.rb b/test/rake/test_rake_task.rb
index d7f14efcdb..0416dfa8dd 100644
--- a/test/rake/test_rake_task.rb
+++ b/test/rake/test_rake_task.rb
@@ -195,14 +195,14 @@ class TestRakeTask < Rake::TestCase
     assert_equal ["b", "c"], Task[:a].prerequisites
   end
 
-  def test_prerequiste_tasks_returns_tasks_not_strings
+  def test_prerequisite_tasks_returns_tasks_not_strings
     a = task :a => ["b", "c"]
     b = task :b
     c = task :c
     assert_equal [b, c], a.prerequisite_tasks
   end
 
-  def test_prerequiste_tasks_fails_if_prerequisites_are_undefined
+  def test_prerequisite_tasks_fails_if_prerequisites_are_undefined
     a = task :a => ["b", "c"]
     task :b
     assert_raises(RuntimeError) do
@@ -210,7 +210,7 @@ class TestRakeTask < Rake::TestCase
     end
   end
 
-  def test_prerequiste_tasks_honors_namespaces
+  def test_prerequisite_tasks_honors_namespaces
     a = b = nil
     namespace "X" do
       a = task :a => ["b", "c"]