diff --git a/languages/plugin-update-checker-ja.mo b/languages/plugin-update-checker-ja.mo
index 7da5af9..376102a 100644
Binary files a/languages/plugin-update-checker-ja.mo and b/languages/plugin-update-checker-ja.mo differ
diff --git a/languages/plugin-update-checker-ja.po b/languages/plugin-update-checker-ja.po
index 2f3e073..673c311 100644
--- a/languages/plugin-update-checker-ja.po
+++ b/languages/plugin-update-checker-ja.po
@@ -1,38 +1,42 @@
 msgid ""
 msgstr ""
 "Project-Id-Version: plugin-update-checker\n"
-"POT-Creation-Date: 2017-02-26 14:43+0900\n"
-"PO-Revision-Date: 2017-02-26 14:55+0900\n"
+"POT-Creation-Date: 2017-06-02 18:31+0900\n"
+"PO-Revision-Date: 2017-06-02 18:32+0900\n"
 "Last-Translator: tak <tak7725@gmail.com>\n"
 "Language-Team: \n"
 "Language: ja_JP\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"X-Generator: Poedit 1.8.12\n"
+"X-Generator: Poedit 2.0.2\n"
 "X-Poedit-Basepath: ..\n"
 "Plural-Forms: nplurals=1; plural=0;\n"
 "X-Poedit-SourceCharset: UTF-8\n"
-"X-Poedit-KeywordsList: __;_e\n"
+"X-Poedit-KeywordsList: __;_e;_x;_x:1,2c\n"
 "X-Poedit-SearchPath-0: .\n"
 
-#: Puc/v4/Plugin/UpdateChecker.php:358
+#: Puc/v4p1/Plugin/UpdateChecker.php:362
 msgid "Check for updates"
 msgstr "アップデートを確認"
 
-#: Puc/v4/Plugin/UpdateChecker.php:404
-msgid "This plugin is up to date."
-msgstr "このプラグインは、最新バージョンです。"
+#: Puc/v4p1/Plugin/UpdateChecker.php:409
+#, php-format
+msgctxt "the plugin title"
+msgid "The %s plugin is up to date."
+msgstr "%s プラグインは、最新バージョンです。"
 
-#: Puc/v4/Plugin/UpdateChecker.php:406
-msgid "A new version of this plugin is available."
-msgstr "このプラグインの新バージョンがあります。"
+#: Puc/v4p1/Plugin/UpdateChecker.php:411
+#, php-format
+msgctxt "the plugin title"
+msgid "A new version of the %s plugin is available."
+msgstr "%s プラグインの最新バージョンがあります。"
 
-#: Puc/v4/Plugin/UpdateChecker.php:408
+#: Puc/v4p1/Plugin/UpdateChecker.php:413
 #, php-format
 msgid "Unknown update checker status \"%s\""
 msgstr "バージョンアップの確認で想定外の状態になりました。ステータス：\"%s\""
 
-#: Puc/v4/Vcs/PluginUpdateChecker.php:83
+#: Puc/v4p1/Vcs/PluginUpdateChecker.php:83
 msgid "There is no changelog available."
 msgstr "更新履歴はありません。"