diff --git a/CHANGELOG.md b/CHANGELOG.md
index c9c70e8..cea8f05 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [3.1.2]
+### Fixed
+- `Failed to locate the main schema resource at 'https://pmd.sourceforge.io/ruleset_xml_schema.xsd'` for php 8.3 and 8.4)
+
+### Changed
+- Update phpmd schema files to 2.0.0 (to match testing-suite's own requirements).
+
 ## [3.1.1]
 ### Fixed
 - Magento 2 `phpmd.xml` incorrectly overrode `CouplingBetweenObjects`: the design ruleset was included twice, causing
diff --git a/config/default/phpmd.xml b/config/default/phpmd.xml
index 9d9bcf0..0ea4123 100644
--- a/config/default/phpmd.xml
+++ b/config/default/phpmd.xml
@@ -1,8 +1,8 @@
 <?xml version="1.0"?>
-<ruleset name="Youwe/Global"
-         xmlns="http://pmd.sf.net/ruleset/1.0.0"
+<ruleset name="PHPMD"
+         xmlns="http://pmd.github.io/schema/ruleset/2.0.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://pmd.sf.net/ruleset/1.0.0 https://pmd.sourceforge.io/ruleset_xml_schema.xsd">
+         xsi:schemaLocation="http://pmd.github.io/schema/ruleset/2.0.0 https://pmd.github.io/schema/ruleset_2_0_0.xsd">
     <description>Default / Fallback configuration for PHPMD rulesets.</description>
 
     <!-- Taken from Global ruleset since we can't modify a referenced rule without overwriting it completely.
diff --git a/config/drupal/phpmd.xml b/config/drupal/phpmd.xml
index 2faca89..a03daaa 100644
--- a/config/drupal/phpmd.xml
+++ b/config/drupal/phpmd.xml
@@ -1,8 +1,8 @@
 <?xml version="1.0"?>
 <ruleset name="PHPMD"
-         xmlns="http://pmd.sf.net/ruleset/1.0.0"
+         xmlns="http://pmd.github.io/schema/ruleset/2.0.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://pmd.sf.net/ruleset/1.0.0 https://pmd.sourceforge.io/ruleset_xml_schema.xsd">
+         xsi:schemaLocation="http://pmd.github.io/schema/ruleset/2.0.0 https://pmd.github.io/schema/ruleset_2_0_0.xsd">
     <description>PHPMD rules for Drupal projects.</description>
     <rule ref="./config/default/phpmd.xml" />
 
diff --git a/config/magento2/phpmd.xml b/config/magento2/phpmd.xml
index 8d0b61e..ea3c523 100644
--- a/config/magento2/phpmd.xml
+++ b/config/magento2/phpmd.xml
@@ -1,8 +1,8 @@
 <?xml version="1.0"?>
 <ruleset name="PHPMD"
-         xmlns="http://pmd.sf.net/ruleset/1.0.0"
+         xmlns="http://pmd.github.io/schema/ruleset/2.0.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://pmd.sf.net/ruleset/1.0.0 https://pmd.sourceforge.io/ruleset_xml_schema.xsd">
+         xsi:schemaLocation="http://pmd.github.io/schema/ruleset/2.0.0 https://pmd.github.io/schema/ruleset_2_0_0.xsd">
     <description>PHPMD rules for Magento 2 projects.</description>
 
     <!-- Taken from Global ruleset since we can't modify a referenced rule without overwriting it completely.
diff --git a/grumphp.yml b/grumphp.yml
index 1cb4d88..8878e4a 100644
--- a/grumphp.yml
+++ b/grumphp.yml
@@ -4,11 +4,11 @@ imports:
 parameters:
   composer.strict: false
   xmllint.ignore_patterns:
-    - /^phpcs.xml$/
-    - /^phpmd.xml$/
-    - /^phpunit.xml$/
-    - /^pdepend.xml$/
-    - /^templates/
+    - /phpcs\.xml$/
+    - /phpmd\.xml$/
+    - /phpunit\.xml$/
+    - /pdepend\.xml$/
+    - /templates/
 
   # Disable requirement for Jira ticket number in the commit message
   git_commit_message.jira_matcher: '/.*/'
diff --git a/phpmd.xml b/phpmd.xml
index 621582e..4486e76 100644
--- a/phpmd.xml
+++ b/phpmd.xml
@@ -1,9 +1,10 @@
 <?xml version="1.0"?>
 <ruleset name="PHPMD"
-         xmlns="http://pmd.sf.net/ruleset/1.0.0"
+         xmlns="http://pmd.github.io/schema/ruleset/2.0.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://pmd.sf.net/ruleset/1.0.0 https://pmd.sourceforge.io/ruleset_xml_schema.xsd">
+         xsi:schemaLocation="http://pmd.github.io/schema/ruleset/2.0.0 https://pmd.github.io/schema/ruleset_2_0_0.xsd">
     <description>PHPMD</description>
+
     <rule ref="./config/default/phpmd.xml">
         <exclude name="ShortVariable"/>
     </rule>
diff --git a/templates/files/default/phpmd.xml b/templates/files/default/phpmd.xml
index d9a611e..76a60f0 100644
--- a/templates/files/default/phpmd.xml
+++ b/templates/files/default/phpmd.xml
@@ -1,9 +1,9 @@
 <?xml version="1.0"?>
 <ruleset name="PHPMD"
-         xmlns="http://pmd.sf.net/ruleset/1.0.0"
+         xmlns="http://pmd.github.io/schema/ruleset/2.0.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://pmd.sf.net/ruleset/1.0.0 https://pmd.sourceforge.io/ruleset_xml_schema.xsd">
+         xsi:schemaLocation="http://pmd.github.io/schema/ruleset/2.0.0 https://pmd.github.io/schema/ruleset_2_0_0.xsd">
     <description>PHPMD</description>
     <!--<exclude-pattern>path/to/exclude/*</exclude-pattern>-->
-    <rule ref="./vendor/youwe/testing-suite/config/default/phpmd.xml" />
-</ruleset>
+    <rule ref="./vendor/youwe/testing-suite/config/pimcore/phpmd.xml" />
+</ruleset>
\ No newline at end of file
diff --git a/templates/files/drupal/phpmd.xml b/templates/files/drupal/phpmd.xml
index 9e69eda..7a58947 100644
--- a/templates/files/drupal/phpmd.xml
+++ b/templates/files/drupal/phpmd.xml
@@ -1,8 +1,8 @@
 <?xml version="1.0"?>
 <ruleset name="PHPMD"
-         xmlns="http://pmd.sf.net/ruleset/1.0.0"
+         xmlns="http://pmd.github.io/schema/ruleset/2.0.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://pmd.sf.net/ruleset/1.0.0 https://pmd.sourceforge.io/ruleset_xml_schema.xsd">
+         xsi:schemaLocation="http://pmd.github.io/schema/ruleset/2.0.0 https://pmd.github.io/schema/ruleset_2_0_0.xsd">
     <description>PHPMD</description>
     <!--<exclude-pattern>path/to/exclude/*</exclude-pattern>-->
     <rule ref="./vendor/youwe/testing-suite/config/drupal/phpmd.xml" />
diff --git a/templates/files/magento2/phpmd.xml b/templates/files/magento2/phpmd.xml
index f8921c3..66b4a83 100644
--- a/templates/files/magento2/phpmd.xml
+++ b/templates/files/magento2/phpmd.xml
@@ -1,8 +1,8 @@
 <?xml version="1.0"?>
 <ruleset name="PHPMD"
-         xmlns="http://pmd.sf.net/ruleset/1.0.0"
+         xmlns="http://pmd.github.io/schema/ruleset/2.0.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://pmd.sf.net/ruleset/1.0.0 https://pmd.sourceforge.io/ruleset_xml_schema.xsd">
+         xsi:schemaLocation="http://pmd.github.io/schema/ruleset/2.0.0 https://pmd.github.io/schema/ruleset_2_0_0.xsd">
     <description>PHPMD</description>
     <!--<exclude-pattern>path/to/exclude/*</exclude-pattern>-->
     <rule ref="./vendor/youwe/testing-suite/config/magento2/phpmd.xml" />
diff --git a/templates/files/pimcore/phpmd.xml b/templates/files/pimcore/phpmd.xml
index 13132e6..76a60f0 100644
--- a/templates/files/pimcore/phpmd.xml
+++ b/templates/files/pimcore/phpmd.xml
@@ -1,9 +1,9 @@
 <?xml version="1.0"?>
 <ruleset name="PHPMD"
-         xmlns="http://pmd.sf.net/ruleset/1.0.0"
+         xmlns="http://pmd.github.io/schema/ruleset/2.0.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://pmd.sf.net/ruleset/1.0.0 https://pmd.sourceforge.io/ruleset_xml_schema.xsd">
+         xsi:schemaLocation="http://pmd.github.io/schema/ruleset/2.0.0 https://pmd.github.io/schema/ruleset_2_0_0.xsd">
     <description>PHPMD</description>
     <!--<exclude-pattern>path/to/exclude/*</exclude-pattern>-->
     <rule ref="./vendor/youwe/testing-suite/config/pimcore/phpmd.xml" />
-</ruleset>
+</ruleset>
\ No newline at end of file