diff --git a/ChangeLog b/ChangeLog
index a3f304bd..10605a37 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,5 @@
+This file has not been not updated. See commit log at https://github.com/kubo/ruby-oci8.
+
 2020-12-30  Kubo Takehiro <kubo@jiubao.org>
 	* NEWS: Add changes between 2.2.8 and 2.2.9.
 	* lib/oci8/version.rb: Update to 2.2.9.
diff --git a/NEWS b/NEWS
index 0f081905..8067e807 100644
--- a/NEWS
+++ b/NEWS
@@ -1,5 +1,12 @@
 # @markup markdown
 
+2.2.12 (2022-12-30)
+===================
+
+- Fix warning: undefining the allocator of T_DATA class OraNumber against Ruby 3.2.0dev. (GH-243)
+- Fix warnings on tests and on compile.
+- Remove code for old ruby versions.
+
 2.2.11 (2022-02-22)
 ===================
 
diff --git a/lib/oci8/version.rb b/lib/oci8/version.rb
index 0ae89d5c..1c1305e5 100644
--- a/lib/oci8/version.rb
+++ b/lib/oci8/version.rb
@@ -1,3 +1,3 @@
 class OCI8
-  VERSION = "2.2.11"
+  VERSION = "2.2.12"
 end
diff --git a/mkpkg-win32.rb b/mkpkg-win32.rb
index 600d3a4f..7c2fabdc 100644
--- a/mkpkg-win32.rb
+++ b/mkpkg-win32.rb
@@ -17,11 +17,11 @@ def run_cmd(cmd, raise_on_error = true)
 
   $ruby_base_dirs =
     [
-     'c:\ruby\rubyinstaller-2.5.0-1-x86',
      'c:\ruby\rubyinstaller-2.6.0-1-x86',
      'c:\ruby\rubyinstaller-2.7.0-1-x86',
      'c:\ruby\rubyinstaller-3.0.0-1-x86',
      'c:\ruby\rubyinstaller-3.1.0-1-x86',
+     'c:\ruby\rubyinstaller-3.2.0-1-x86',
     ]
 
   $oracle_path = 'c:\oracle\instantclient_19_9-win32'
@@ -29,18 +29,17 @@ def run_cmd(cmd, raise_on_error = true)
 
   $build_ruby_dirs =
     [
-     ['c:\ruby\rubyinstaller-2.5.0-1-x86', $ridk_setup, :disable_fortify_source],
      ['c:\ruby\rubyinstaller-2.6.0-1-x86', $ridk_setup],
      ['c:\ruby\rubyinstaller-2.7.0-1-x86', $ridk_setup],
      ['c:\ruby\rubyinstaller-3.0.0-1-x86', $ridk_setup],
      ['c:\ruby\rubyinstaller-3.1.0-1-x86', $ridk_setup],
+     ['c:\ruby\rubyinstaller-3.2.0-1-x86', $ridk_setup],
     ]
 
 when 'x64-mingw32'
   $ruby_base_dirs =
     [
      # RubyInstaller <URL:http://rubyinstaller.org>
-     'c:\ruby\rubyinstaller-2.5.0-1-x64',
      'c:\ruby\rubyinstaller-2.6.0-1-x64',
      'c:\ruby\rubyinstaller-2.7.0-1-x64',
      'c:\ruby\rubyinstaller-3.0.0-1-x64',
@@ -51,7 +50,6 @@ def run_cmd(cmd, raise_on_error = true)
   $ridk_setup = 'ridk enable'
   $build_ruby_dirs =
     [
-     ['c:\ruby\rubyinstaller-2.5.0-1-x64', $ridk_setup, :disable_fortify_source],
      ['c:\ruby\rubyinstaller-2.6.0-1-x64', $ridk_setup],
      ['c:\ruby\rubyinstaller-2.7.0-1-x64', $ridk_setup],
      ['c:\ruby\rubyinstaller-3.0.0-1-x64', $ridk_setup],
@@ -63,6 +61,7 @@ def run_cmd(cmd, raise_on_error = true)
     [
      # RubyInstaller <URL:http://rubyinstaller.org>
      'c:\ruby\rubyinstaller-3.1.0-1-x64',
+     'c:\ruby\rubyinstaller-3.2.0-1-x64',
     ]
 
   $oracle_path = 'c:\oracle\instantclient_19_9-win64'
@@ -70,10 +69,12 @@ def run_cmd(cmd, raise_on_error = true)
   $build_ruby_dirs =
     [
      ['c:\ruby\rubyinstaller-3.1.0-1-x64', $ridk_setup],
+     ['c:\ruby\rubyinstaller-3.2.0-1-x64', $ridk_setup],
     ]
 
 when 'all'
   files = File.read('dist-files').split("\n")
+  mkpkg_rb = File.absolute_path?($0) ? $0 : File.join('..', $0)
   ['x86-mingw32', 'x64-mingw32', 'x64-mingw-ucrt'].each do |platform|
     FileUtils.rm_rf platform
     files.each do |file|
@@ -82,7 +83,7 @@ def run_cmd(cmd, raise_on_error = true)
       FileUtils.copy(file, dest)
     end
     Dir.chdir platform do
-      run_cmd("#{RbConfig.ruby} ../mkpkg-win32.rb #{platform}")
+      run_cmd("#{RbConfig.ruby} #{mkpkg_rb} #{platform}")
     end
   end
   exit 0