diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..42a2e45
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,12 @@
+# EditorConfig is awesome: http://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+indent_style = tab
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..7c0209d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+build/plg_system_httpheader.zip
diff --git a/README.md b/README.md
index 1a65706..b0b6d19 100644
--- a/README.md
+++ b/README.md
@@ -120,3 +120,12 @@ This plugin has been included in the Joomla Core ([joomla/joomla-cms#18301](http
 David Jardin - @snipersister - https://www.djumla.de/ & Yves Hoppe - @yvesh - https://compojoom.com/
 
 For giving me the inspiration for the plugin and their feedback on the actual implementation. Thanks :+1:
+
+## Release steps
+
+- `build/build.sh`
+- `git commit -am 'prepare release HttpHeader 1.0.x'`
+- `git tag -s '1.0.x' -m 'HttpHeader 1.0.x'`
+- `git push origin --tags`
+- create the release on GitHub
+- `git push origin master`
diff --git a/build/build.sh b/build/build.sh
new file mode 100644
index 0000000..055aab8
--- /dev/null
+++ b/build/build.sh
@@ -0,0 +1,9 @@
+#!/bin/bash
+EXTENSION_ZIP_FILENAME="build/plg_system_httpheader.zip"
+EXTENSION_ELEMENT="httpheader"
+if [ ! -f "$EXTENSION_ELEMENT.xml" ]; then cd ..; fi
+if [ -f "$EXTENSION_ZIP_FILENAME" ]; then rm $EXTENSION_ZIP_FILENAME; fi
+zip -r $EXTENSION_ZIP_FILENAME language/ "$EXTENSION_ELEMENT.php" "$EXTENSION_ELEMENT.xml" script.php --quiet
+SHA512=$(sha512sum $EXTENSION_ZIP_FILENAME | awk '{print $1}')
+sed -i -e "s/\(<sha512>\).*\(<\/sha512>\)/<sha512>$SHA512<\/sha512>/g" update.xml
+echo 'package and update server ready'
diff --git a/httpheader.xml b/httpheader.xml
index 0be1942..c38de5e 100644
--- a/httpheader.xml
+++ b/httpheader.xml
@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
 <extension version="3.9" type="plugin" group="system" method="upgrade">
 	<name>plg_system_httpheader</name>
-	<creationDate>March 2019</creationDate>
+	<creationDate>24.03.2020</creationDate>
 	<author>Tobias Zulauf</author>
-	<copyright>(C) 2017 - 2019 Tobias Zulauf All rights reserved.</copyright>
+	<copyright>(C) 2017 - 2020 Tobias Zulauf All rights reserved.</copyright>
 	<authorUrl>https://www.jah-tz.de</authorUrl>
-	<version>1.0.11</version>
+	<version>1.0.12</version>
 	<license>GNU/GPL Version 2 or later</license>
 	<description>PLG_SYSTEM_HTTPHEADER_XML_DESCRIPTION</description>
 	<scriptfile>script.php</scriptfile>
diff --git a/update.xml b/update.xml
index 0e21e2a..e7a15d1 100644
--- a/update.xml
+++ b/update.xml
@@ -1,24 +1,45 @@
-<?xml version="1.0" ?>
-<updates>
-	<update>
-		<name>HttpHeader 1.0.11</name>
-		<description>HttpHeader Plugin</description>
-		<element>httpheader</element>
-		<type>plugin</type>
-		<folder>system</folder>
-		<client>site</client>
-		<version>1.0.11</version>
-		<infourl title="HttpHeader Plugin">https://github.com/zero-24/plg_system_httpheader</infourl>
-		<downloads>
-			<downloadurl type="full" format="zip">https://github.com/zero-24/plg_system_httpheader/releases/download/1.0.11/plg_system_httpheader.zip</downloadurl>
-		</downloads>
-		<sha512>9a3963c18a00b597618576e5ff325c7e93dcc2c933d0e741aa531f7dd2507065e3f945cc7f790571fac42ba193ba846bbd4e6ad1fdac2eacf2204ea5d396e3f7</sha512>
-		<tags>
-			<tag>stable</tag>
-		</tags>
-		<maintainer>Tobias Zulauf</maintainer>
-		<maintainerurl>https://www.jah-tz.de</maintainerurl>
-		<php_minimum>7.0.0</php_minimum>
-		<targetplatform name="joomla" version="3.[89]"/>
-	</update>
-</updates>
+<?xml version="1.0" ?>
+<updates>
+	<update>
+		<name>HttpHeader 1.0.11</name>
+		<description>HttpHeader Plugin</description>
+		<element>httpheader</element>
+		<type>plugin</type>
+		<folder>system</folder>
+		<client>site</client>
+		<version>1.0.11</version>
+		<infourl title="HttpHeader Plugin">https://github.com/zero-24/plg_system_httpheader</infourl>
+		<downloads>
+			<downloadurl type="full" format="zip">https://github.com/zero-24/plg_system_httpheader/releases/download/1.0.11/plg_system_httpheader.zip</downloadurl>
+		</downloads>
+		<sha512>a7cce92c0948d254680b1f5515e686d0718926aaccd78fa22837f22b451f6278bfd9d91dcb04423c1160370288d1215b84bc1964eab025d34cf022b36a4702bb</sha512>
+		<tags>
+			<tag>stable</tag>
+		</tags>
+		<maintainer>Tobias Zulauf</maintainer>
+		<maintainerurl>https://www.jah-tz.de</maintainerurl>
+		<php_minimum>7.0.0</php_minimum>
+		<targetplatform name="joomla" version="3.([89]|10)"/>
+	</update>
+	<update>
+		<name>HttpHeader 1.0.11</name>
+		<description>HttpHeader Plugin</description>
+		<element>httpheader</element>
+		<type>plugin</type>
+		<folder>system</folder>
+		<client>site</client>
+		<version>1.0.11</version>
+		<infourl title="HttpHeader Plugin">https://github.com/zero-24/plg_system_httpheader</infourl>
+		<downloads>
+			<downloadurl type="full" format="zip">https://github.com/zero-24/plg_system_httpheader/releases/download/1.0.11/plg_system_httpheader.zip</downloadurl>
+		</downloads>
+		<sha512>a7cce92c0948d254680b1f5515e686d0718926aaccd78fa22837f22b451f6278bfd9d91dcb04423c1160370288d1215b84bc1964eab025d34cf022b36a4702bb</sha512>
+		<tags>
+			<tag>stable</tag>
+		</tags>
+		<maintainer>Tobias Zulauf</maintainer>
+		<maintainerurl>https://www.jah-tz.de</maintainerurl>
+		<php_minimum>7.0.0</php_minimum>
+		<targetplatform name="joomla" version="4.0"/>
+	</update>
+</updates>