diff --git a/locale/ja/LC_MESSAGES/Creational/Prototype/README.po b/locale/ja/LC_MESSAGES/Creational/Prototype/README.po
index 32c3202..dedfbe1 100644
--- a/locale/ja/LC_MESSAGES/Creational/Prototype/README.po
+++ b/locale/ja/LC_MESSAGES/Creational/Prototype/README.po
@@ -2,7 +2,7 @@
 # Copyright (C) 2011-2019, Dominik Liebler and contributors
 # This file is distributed under the same license as the DesignPatternsPHP
 # package.
-# FIRST AUTHOR <EMAIL@ADDRESS>, 2020.
+# Sumita Takaki <sumita.takaki@gmail.com>, 2020.
 #
 #, fuzzy
 msgid ""
@@ -11,7 +11,7 @@ msgstr ""
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2020-05-04 00:50+0900\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
-"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Last-Translator: Sumita Takaki <sumita.takaki@gmail.com>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
@@ -20,39 +20,42 @@ msgstr ""
 
 #: ../../Creational/Prototype/README.rst:2
 msgid "`Prototype`__"
-msgstr ""
+msgstr "`Prototype パターン`__"
 
 #: ../../Creational/Prototype/README.rst:5
 msgid "Purpose"
-msgstr ""
+msgstr "目的"
 
 #: ../../Creational/Prototype/README.rst:7
 msgid ""
 "To avoid the cost of creating objects the standard way (new Foo()) and "
 "instead create a prototype and clone it."
 msgstr ""
+"オブジェクトを新しく生成する（new Foo()）コストをかける代わりに"
+"プロトタイプを生成して、それをコピーする。"
 
 #: ../../Creational/Prototype/README.rst:11
 msgid "Examples"
-msgstr ""
+msgstr "例"
 
 #: ../../Creational/Prototype/README.rst:13
 msgid ""
 "Large amounts of data (e.g. create 1,000,000 rows in a database at once "
 "via a ORM)."
 msgstr ""
+"大容量のデータ（例：1,000,000行のデータをORM経由でデータベースに作成する）"
 
 #: ../../Creational/Prototype/README.rst:17
 msgid "UML Diagram"
-msgstr ""
+msgstr "クラス図"
 
 #: ../../Creational/Prototype/README.rst:24
 msgid "Code"
-msgstr ""
+msgstr "サンプルコード"
 
 #: ../../Creational/Prototype/README.rst:26
 msgid "You can also find this code on `GitHub`_"
-msgstr ""
+msgstr "サンプルコードは `GitHub`_ でも確認することができます。"
 
 #: ../../Creational/Prototype/README.rst:28
 msgid "BookPrototype.php"
@@ -68,7 +71,7 @@ msgstr ""
 
 #: ../../Creational/Prototype/README.rst:47
 msgid "Test"
-msgstr ""
+msgstr "テスト"
 
 #: ../../Creational/Prototype/README.rst:49
 msgid "Tests/PrototypeTest.php"