diff --git a/demos/README.md b/demos/README.md
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+# Locale Plugin Demo
+
+This demo shows how to configure the Jenkins Locale plugin using Configuration as Code.
+
+It sets the system locale to English (US) and ignores browser language preferences.
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diff --git a/demos/locale/jenkins.yaml b/demos/locale/jenkins.yaml
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+jenkins:
+  systemMessage: "Jenkins configured with Locale plugin via JCasC"
+
+unclassified:
+  locale:
+    systemLocale: "en_US"
+    ignoreAcceptLanguage: true
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