diff --git a/www/core/test/next_major_extension.xml b/www/core/test/next_major_extension.xml
new file mode 100644
index 00000000..b25c6c6e
--- /dev/null
+++ b/www/core/test/next_major_extension.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" ?>
+<updates>
+	<update>
+		<name>Joomla! 4.0.0 Alpha</name>
+		<description>Joomla! CMS</description>
+		<element>joomla</element>
+		<type>file</type>
+		<version>4.0.0-alpha</version>
+		<infourl title="Joomla! 4.0 Alpha">https://www.joomla.org/announcements/release-news/5718-joomla-4-0-alpha-1-release.html</infourl>
+		<downloads>
+			<downloadurl type="full" format="zip">https://github.com/joomla/joomla-cms/releases/download/4.0.0-alpha/Joomla_4.0.0-Alpha-Update_Package.zip</downloadurl>
+		</downloads>
+		<supported_databases mysql="5.5.3" postgresql="9.2" />
+		<php_minimum>7.0.0</php_minimum>
+		<maintainer>Joomla! PLT</maintainer>
+		<maintainerurl>https://www.joomla.org</maintainerurl>
+		<targetplatform name="joomla" version="4.[01]" />
+	</update>
+</updates>
diff --git a/www/core/test/next_major_list.xml b/www/core/test/next_major_list.xml
new file mode 100644
index 00000000..6c8e2726
--- /dev/null
+++ b/www/core/test/next_major_list.xml
@@ -0,0 +1,3 @@
+<extensionset name="Joomla Core next major Updateserver" description="The Joomla Core Update Server for the next major update">
+	<extension name="Joomla" element="joomla" type="file" version="4.0.0-alpha" targetplatformversion="4.0" detailsurl="https://update.joomla.org/core/test/next_major_extension.xml" />
+</extensionset>