diff --git a/tests/phpunit/data/languages/admin-en_GB.mo b/tests/phpunit/data/languages/admin-en_GB.mo
index 690efdb2c2..54e7ccf3ba 100644
Binary files a/tests/phpunit/data/languages/admin-en_GB.mo and b/tests/phpunit/data/languages/admin-en_GB.mo differ
diff --git a/tests/phpunit/data/languages/admin-en_GB.po b/tests/phpunit/data/languages/admin-en_GB.po
index f51e83103e..5cce983ec8 100644
--- a/tests/phpunit/data/languages/admin-en_GB.po
+++ b/tests/phpunit/data/languages/admin-en_GB.po
@@ -2,13 +2,14 @@
 # This file is distributed under the same license as the Administration package.
 msgid ""
 msgstr ""
-"PO-Revision-Date: 2015-12-07 10:23:11+0000\n"
+"PO-Revision-Date: 2016-10-25 18:29+0200\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=2; plural=n != 1;\n"
-"X-Generator: GlotPress/1.0-alpha-1100\n"
+"X-Generator: Poedit 1.8.10\n"
 "Project-Id-Version: Administration\n"
+"Language: en_GB\n"
 
 #: wp-admin/about.php:42 wp-admin/credits.php:23 wp-admin/freedoms.php:22
 msgid "Thank you for updating! WordPress %s makes your site more connected and responsive."
diff --git a/tests/phpunit/data/languages/admin-es_ES.mo b/tests/phpunit/data/languages/admin-es_ES.mo
index 01e87d2ed8..3b95320539 100644
Binary files a/tests/phpunit/data/languages/admin-es_ES.mo and b/tests/phpunit/data/languages/admin-es_ES.mo differ
diff --git a/tests/phpunit/data/languages/admin-es_ES.po b/tests/phpunit/data/languages/admin-es_ES.po
index 445396872f..12c108b4bf 100644
--- a/tests/phpunit/data/languages/admin-es_ES.po
+++ b/tests/phpunit/data/languages/admin-es_ES.po
@@ -2,13 +2,14 @@
 # This file is distributed under the same license as the Administration package.
 msgid ""
 msgstr ""
-"PO-Revision-Date: 2015-12-22 20:26:46+0000\n"
+"PO-Revision-Date: 2016-10-25 18:29+0200\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=2; plural=n != 1;\n"
-"X-Generator: GlotPress/1.0-alpha-1100\n"
+"X-Generator: Poedit 1.8.10\n"
 "Project-Id-Version: Administration\n"
+"Language: es_ES\n"
 
 #: wp-admin/about.php:42 wp-admin/credits.php:23 wp-admin/freedoms.php:22
 msgid "Thank you for updating! WordPress %s makes your site more connected and responsive."
diff --git a/tests/phpunit/data/languages/admin-network-en_GB.mo b/tests/phpunit/data/languages/admin-network-en_GB.mo
index e74c830635..a11ef4f9b9 100644
Binary files a/tests/phpunit/data/languages/admin-network-en_GB.mo and b/tests/phpunit/data/languages/admin-network-en_GB.mo differ
diff --git a/tests/phpunit/data/languages/admin-network-en_GB.po b/tests/phpunit/data/languages/admin-network-en_GB.po
index 3fb0935010..6ee5ac1781 100644
--- a/tests/phpunit/data/languages/admin-network-en_GB.po
+++ b/tests/phpunit/data/languages/admin-network-en_GB.po
@@ -2,13 +2,15 @@
 # This file is distributed under the same license as the Network Admin package.
 msgid ""
 msgstr ""
-"PO-Revision-Date: 2015-11-26 00:00:19+0000\n"
+"PO-Revision-Date: 2016-10-25 18:29+0200\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=2; plural=n != 1;\n"
-"X-Generator: GlotPress/1.0-alpha-1100\n"
+"X-Generator: Poedit 1.8.10\n"
 "Project-Id-Version: Network Admin\n"
+"POT-Creation-Date: \n"
+"Language: en_GB\n"
 
 #: wp-admin/network/site-users.php:329 wp-admin/network/user-new.php:106
 msgid "A password reset link will be sent to the user via email."
diff --git a/tests/phpunit/data/languages/admin-network-es_ES.mo b/tests/phpunit/data/languages/admin-network-es_ES.mo
index 0e67cad091..cb5168629f 100644
Binary files a/tests/phpunit/data/languages/admin-network-es_ES.mo and b/tests/phpunit/data/languages/admin-network-es_ES.mo differ
diff --git a/tests/phpunit/data/languages/admin-network-es_ES.po b/tests/phpunit/data/languages/admin-network-es_ES.po
index 037f8792bc..36250eff7c 100644
--- a/tests/phpunit/data/languages/admin-network-es_ES.po
+++ b/tests/phpunit/data/languages/admin-network-es_ES.po
@@ -2,13 +2,14 @@
 # This file is distributed under the same license as the Network Admin package.
 msgid ""
 msgstr ""
-"PO-Revision-Date: 2015-11-26 00:00:19+0000\n"
+"PO-Revision-Date: 2016-10-25 18:29+0200\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=2; plural=n != 1;\n"
-"X-Generator: GlotPress/1.0-alpha-1100\n"
+"X-Generator: Poedit 1.8.10\n"
 "Project-Id-Version: Network Admin\n"
+"Language: es_ES\n"
 
 #: wp-admin/network/site-users.php:329 wp-admin/network/user-new.php:106
 msgid "A password reset link will be sent to the user via email."
diff --git a/tests/phpunit/data/languages/continents-cities-es_ES.mo b/tests/phpunit/data/languages/continents-cities-es_ES.mo
index 504d237e33..99bac6fedf 100644
Binary files a/tests/phpunit/data/languages/continents-cities-es_ES.mo and b/tests/phpunit/data/languages/continents-cities-es_ES.mo differ
diff --git a/tests/phpunit/data/languages/continents-cities-es_ES.po b/tests/phpunit/data/languages/continents-cities-es_ES.po
index 5c7ce1c6c5..2b63d0cddb 100644
--- a/tests/phpunit/data/languages/continents-cities-es_ES.po
+++ b/tests/phpunit/data/languages/continents-cities-es_ES.po
@@ -2,13 +2,14 @@
 # This file is distributed under the same license as the Continents & Cities package.
 msgid ""
 msgstr ""
-"PO-Revision-Date: 2015-12-29 10:06:29+0000\n"
+"PO-Revision-Date: 2016-10-26 00:01+0200\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=2; plural=n != 1;\n"
-"X-Generator: GlotPress/1.0-alpha-1100\n"
+"X-Generator: Poedit 1.8.10\n"
 "Project-Id-Version: Continents & Cities\n"
+"Language: es_ES\n"
 
 #: wp-admin/includes/continents-cities.php:140
 msgid "Vincennes"
diff --git a/tests/phpunit/data/languages/de_DE.mo b/tests/phpunit/data/languages/de_DE.mo
new file mode 100644
index 0000000000..f2c48b4b40
Binary files /dev/null and b/tests/phpunit/data/languages/de_DE.mo differ
diff --git a/tests/phpunit/data/languages/de_DE.po b/tests/phpunit/data/languages/de_DE.po
new file mode 100644
index 0000000000..cd556ed401
--- /dev/null
+++ b/tests/phpunit/data/languages/de_DE.po
@@ -0,0 +1,42 @@
+# Translation of 4.6.x in German
+# This file is distributed under the same license as the 4.6.x package.
+msgid ""
+msgstr ""
+"PO-Revision-Date: 2016-10-25 18:27+0200\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=n != 1;\n"
+"X-Generator: Poedit 1.8.10\n"
+"Project-Id-Version: 4.6.x\n"
+"Language: de_DE\n"
+
+#. translators: Translate this to the correct language tag for your locale, see
+#. https://www.w3.org/International/articles/language-tags/ for reference. Do
+#. not translate into your own language.
+#: wp-includes/general-template.php:716
+msgid "html_lang_attribute"
+msgstr "de-DE"
+
+#. translators: 'rtl' or 'ltr'. This sets the text direction for WordPress.
+#: wp-includes/class-wp-locale.php:223
+msgctxt "text direction"
+msgid "ltr"
+msgstr "ltr"
+
+#. translators: $dec_point argument for https://secure.php.net/number_format,
+#. default is .
+#: wp-includes/class-wp-locale.php:215
+msgid "number_format_decimal_point"
+msgstr ","
+
+#. translators: $thousands_sep argument for
+#. https://secure.php.net/number_format, default is ,
+#: wp-includes/class-wp-locale.php:202
+msgid "number_format_thousands_sep"
+msgstr "."
+
+#. translators: %s: Plugin name and version
+#: wp-includes/script-loader.php:620
+msgid "Update %s now"
+msgstr "Jetzt %s aktualisieren"
diff --git a/tests/phpunit/data/languages/en_GB.mo b/tests/phpunit/data/languages/en_GB.mo
index b569b3b2c5..24a142cfa5 100644
Binary files a/tests/phpunit/data/languages/en_GB.mo and b/tests/phpunit/data/languages/en_GB.mo differ
diff --git a/tests/phpunit/data/languages/en_GB.po b/tests/phpunit/data/languages/en_GB.po
index aeb7f01a0d..a381d3c7d2 100644
--- a/tests/phpunit/data/languages/en_GB.po
+++ b/tests/phpunit/data/languages/en_GB.po
@@ -2,13 +2,14 @@
 # This file is distributed under the same license as the Development (4.4.x) package.
 msgid ""
 msgstr ""
-"PO-Revision-Date: 2016-01-14 21:14:29+0000\n"
+"PO-Revision-Date: 2016-10-26 00:01+0200\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=2; plural=n != 1;\n"
-"X-Generator: GlotPress/1.0-alpha-1100\n"
+"X-Generator: Poedit 1.8.10\n"
 "Project-Id-Version: Development (4.4.x)\n"
+"Language: en_GB\n"
 
 #. translators: 'rtl' or 'ltr'. This sets the text direction for WordPress.
 #: wp-includes/locale.php:201
diff --git a/tests/phpunit/data/languages/es_ES.mo b/tests/phpunit/data/languages/es_ES.mo
index 921c9a7dc0..068d37a710 100644
Binary files a/tests/phpunit/data/languages/es_ES.mo and b/tests/phpunit/data/languages/es_ES.mo differ
diff --git a/tests/phpunit/data/languages/es_ES.po b/tests/phpunit/data/languages/es_ES.po
index 005ae62c3b..0736e9ba8a 100644
--- a/tests/phpunit/data/languages/es_ES.po
+++ b/tests/phpunit/data/languages/es_ES.po
@@ -2,13 +2,14 @@
 # This file is distributed under the same license as the Development (4.4.x) package.
 msgid ""
 msgstr ""
-"PO-Revision-Date: 2016-01-07 18:35:45+0000\n"
+"PO-Revision-Date: 2016-10-25 18:28+0200\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=2; plural=n != 1;\n"
-"X-Generator: GlotPress/1.0-alpha-1100\n"
+"X-Generator: Poedit 1.8.10\n"
 "Project-Id-Version: Development (4.4.x)\n"
+"Language: es_ES\n"
 
 #. translators: 'rtl' or 'ltr'. This sets the text direction for WordPress.
 #: wp-includes/locale.php:201
diff --git a/tests/phpunit/data/languages/plugins/internationalized-plugin-de_DE.mo b/tests/phpunit/data/languages/plugins/internationalized-plugin-de_DE.mo
index e789268e61..96bf7ad890 100644
Binary files a/tests/phpunit/data/languages/plugins/internationalized-plugin-de_DE.mo and b/tests/phpunit/data/languages/plugins/internationalized-plugin-de_DE.mo differ
diff --git a/tests/phpunit/data/languages/plugins/internationalized-plugin-de_DE.po b/tests/phpunit/data/languages/plugins/internationalized-plugin-de_DE.po
index b1fff26113..bfb7d8ca39 100644
--- a/tests/phpunit/data/languages/plugins/internationalized-plugin-de_DE.po
+++ b/tests/phpunit/data/languages/plugins/internationalized-plugin-de_DE.po
@@ -2,14 +2,12 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "POT-Creation-Date: 2015-12-31 16:31+0100\n"
-"PO-Revision-Date: 2016-04-28 18:50+0200\n"
-"Last-Translator: Pascal Birchler <pascal@required.ch>\n"
-"Language-Team: \n"
+"PO-Revision-Date: 2016-10-26 00:02+0200\n"
 "Language: de_DE\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"X-Generator: Poedit 1.8.4\n"
+"X-Generator: Poedit 1.8.10\n"
 "X-Poedit-Basepath: .\n"
 "Plural-Forms: nplurals=2; plural=(n != 1);\n"
 "X-Poedit-KeywordsList: __;_e;_x:1,2c;_ex:1,2c;_n:1,2;_nx:1,2,4c;_n_noop:1,2;"
diff --git a/tests/phpunit/data/languages/themes/internationalized-theme-de_DE.mo b/tests/phpunit/data/languages/themes/internationalized-theme-de_DE.mo
index cfd2b5a27e..5a95f01bab 100644
Binary files a/tests/phpunit/data/languages/themes/internationalized-theme-de_DE.mo and b/tests/phpunit/data/languages/themes/internationalized-theme-de_DE.mo differ
diff --git a/tests/phpunit/data/languages/themes/internationalized-theme-de_DE.po b/tests/phpunit/data/languages/themes/internationalized-theme-de_DE.po
index 78c90e427c..6d2391756f 100644
--- a/tests/phpunit/data/languages/themes/internationalized-theme-de_DE.po
+++ b/tests/phpunit/data/languages/themes/internationalized-theme-de_DE.po
@@ -2,14 +2,12 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "POT-Creation-Date: 2015-12-31 16:38+0100\n"
-"PO-Revision-Date: 2016-04-28 18:50+0200\n"
-"Last-Translator: Pascal Birchler <pascal@required.ch>\n"
-"Language-Team: \n"
+"PO-Revision-Date: 2016-10-26 00:02+0200\n"
 "Language: de_DE\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"X-Generator: Poedit 1.8.4\n"
+"X-Generator: Poedit 1.8.10\n"
 "X-Poedit-Basepath: .\n"
 "Plural-Forms: nplurals=2; plural=(n != 1);\n"
 "X-Poedit-KeywordsList: __;_e;_x:1,2c;_ex:1,2c;_n:1,2;_nx:1,2,4c;_n_noop:1,2;"
diff --git a/tests/phpunit/tests/l10n.php b/tests/phpunit/tests/l10n.php
index f1048aae30..154c78eab6 100644
--- a/tests/phpunit/tests/l10n.php
+++ b/tests/phpunit/tests/l10n.php
@@ -85,7 +85,7 @@ class Tests_L10n extends WP_UnitTestCase {
 		$this->assertEmpty( $array );
 
 		$array = get_available_languages( DIR_TESTDATA . '/languages/' );
-		$this->assertEquals( array( 'en_GB', 'es_ES' ), $array );
+		$this->assertEquals( array( 'de_DE', 'en_GB', 'es_ES' ), $array );
 	}
 
 	/**
@@ -99,15 +99,15 @@ class Tests_L10n extends WP_UnitTestCase {
 
 		$this->assertNotEmpty( $installed_translations['default']['en_GB'] );
 		$data_en_GB = $installed_translations['default']['en_GB'];
-		$this->assertEquals( '2016-01-14 21:14:29+0000', $data_en_GB['PO-Revision-Date'] );
+		$this->assertEquals( '2016-10-26 00:01+0200', $data_en_GB['PO-Revision-Date'] );
 		$this->assertEquals( 'Development (4.4.x)', $data_en_GB['Project-Id-Version'] );
-		$this->assertEquals( 'GlotPress/1.0-alpha-1100', $data_en_GB['X-Generator'] );
+		$this->assertEquals( 'Poedit 1.8.10', $data_en_GB['X-Generator'] );
 
 		$this->assertNotEmpty( $installed_translations['admin']['es_ES'] );
 		$data_es_ES = $installed_translations['admin']['es_ES'];
-		$this->assertEquals( '2015-12-22 20:26:46+0000', $data_es_ES['PO-Revision-Date'] );
+		$this->assertEquals( '2016-10-25 18:29+0200', $data_es_ES['PO-Revision-Date'] );
 		$this->assertEquals( 'Administration', $data_es_ES['Project-Id-Version'] );
-		$this->assertEquals( 'GlotPress/1.0-alpha-1100', $data_es_ES['X-Generator'] );
+		$this->assertEquals( 'Poedit 1.8.10', $data_es_ES['X-Generator'] );
 	}
 
 	/**