diff --git a/typo3/sysext/core/Classes/Localization/Locales.php b/typo3/sysext/core/Classes/Localization/Locales.php
index 57bcdf97e7aa0448ce8e9d3e2fe7025def609a29..dde93d63bff414ca12a60da7281b82a0beaf0adf 100644
--- a/typo3/sysext/core/Classes/Localization/Locales.php
+++ b/typo3/sysext/core/Classes/Localization/Locales.php
@@ -61,6 +61,7 @@ class Locales implements SingletonInterface
         'fo' => 'Faroese',
         'fr' => 'French',
         'fr_CA' => 'French (Canada)',
+        'gd' => 'Scottish Gaelic',
         'gl' => 'Galician',
         'he' => 'Hebrew',
         'hi' => 'Hindi',
diff --git a/typo3/sysext/core/Documentation/Changelog/13.1/Feature-103255-NativeSupportForLanguageGaelicAdded.rst b/typo3/sysext/core/Documentation/Changelog/13.1/Feature-103255-NativeSupportForLanguageGaelicAdded.rst
new file mode 100644
index 0000000000000000000000000000000000000000..973d95d9e7806b058bb4d4b83c91a3165f7ae068
--- /dev/null
+++ b/typo3/sysext/core/Documentation/Changelog/13.1/Feature-103255-NativeSupportForLanguageGaelicAdded.rst
@@ -0,0 +1,34 @@
+.. include:: /Includes.rst.txt
+
+.. _feature-103255:
+
+====================================================================
+Feature: #103255 - Native support for language Scottish Gaelic added
+====================================================================
+
+See :issue:`103255`
+
+Description
+===========
+
+TYPO3 now supports Scottish Gaelic. Scottish Gaelic language is spoken in Scotland.
+
+The ISO 639-1 code for Scottish Gaelic is "gd", which is how TYPO3
+accesses the language internally.
+
+
+Impact
+======
+
+It is now possible to
+
+*  Fetch translated labels from translations.typo3.org / CrowdIn automatically
+   within the TYPO3 Backend
+*  Switch the backend interface to Scottish Gaelic language
+*  Create a new language in a site configuration using Scottish Gaelic
+*  Create translation files with the "gd" prefix (such as `gd.locallang.xlf`)
+   to create your own labels
+
+and TYPO3 will pick Scottish Gaelic as a language just like any other supported language.
+
+.. index:: Backend, Frontend, ext:core