diff --git a/src/Report/Xml/BuildInformation.php b/src/Report/Xml/BuildInformation.php
index dba230123..c91e5989e 100644
--- a/src/Report/Xml/BuildInformation.php
+++ b/src/Report/Xml/BuildInformation.php
@@ -62,14 +62,14 @@ public function setGeneratorVersions(string $phpUnitVersion, string $coverageVer
     private function nodeByName(string $name): DOMElement
     {
         $node = $this->contextNode->getElementsByTagNameNS(
-            'https://schema.phpunit.de/coverage/1.0',
+            Facade::XML_NAMESPACE,
             $name,
         )->item(0);
 
         if ($node === null) {
             $node = $this->contextNode->appendChild(
                 $this->contextNode->ownerDocument->createElementNS(
-                    'https://schema.phpunit.de/coverage/1.0',
+                    Facade::XML_NAMESPACE,
                     $name,
                 ),
             );
diff --git a/src/Report/Xml/Coverage.php b/src/Report/Xml/Coverage.php
index 812672081..9462780be 100644
--- a/src/Report/Xml/Coverage.php
+++ b/src/Report/Xml/Coverage.php
@@ -30,7 +30,7 @@ public function finalize(array $tests): void
     {
         $writer = new XMLWriter;
         $writer->openMemory();
-        $writer->startElementNs(null, $this->contextNode->nodeName, 'https://schema.phpunit.de/coverage/1.0');
+        $writer->startElementNs(null, $this->contextNode->nodeName, Facade::XML_NAMESPACE);
         $writer->writeAttribute('nr', $this->line);
 
         foreach ($tests as $test) {
diff --git a/src/Report/Xml/Facade.php b/src/Report/Xml/Facade.php
index 30c35e269..85d5cd5cf 100644
--- a/src/Report/Xml/Facade.php
+++ b/src/Report/Xml/Facade.php
@@ -43,6 +43,7 @@
  */
 final class Facade
 {
+    public const string XML_NAMESPACE = 'https://schema.phpunit.de/coverage/1.0';
     private string $target;
     private Project $project;
     private readonly string $phpUnitVersion;
diff --git a/src/Report/Xml/File.php b/src/Report/Xml/File.php
index 4a3fea008..0d1e73955 100644
--- a/src/Report/Xml/File.php
+++ b/src/Report/Xml/File.php
@@ -34,7 +34,7 @@ public function totals(): Totals
         if ($totalsContainer === null) {
             $totalsContainer = $this->contextNode->appendChild(
                 $this->dom->createElementNS(
-                    'https://schema.phpunit.de/coverage/1.0',
+                    Facade::XML_NAMESPACE,
                     'totals',
                 ),
             );
@@ -48,14 +48,14 @@ public function totals(): Totals
     public function lineCoverage(string $line): Coverage
     {
         $coverage = $this->contextNode->getElementsByTagNameNS(
-            'https://schema.phpunit.de/coverage/1.0',
+            Facade::XML_NAMESPACE,
             'coverage',
         )->item(0);
 
         if ($coverage === null) {
             $coverage = $this->contextNode->appendChild(
                 $this->dom->createElementNS(
-                    'https://schema.phpunit.de/coverage/1.0',
+                    Facade::XML_NAMESPACE,
                     'coverage',
                 ),
             );
@@ -63,7 +63,7 @@ public function lineCoverage(string $line): Coverage
 
         $lineNode = $coverage->appendChild(
             $this->dom->createElementNS(
-                'https://schema.phpunit.de/coverage/1.0',
+                Facade::XML_NAMESPACE,
                 'line',
             ),
         );
diff --git a/src/Report/Xml/Node.php b/src/Report/Xml/Node.php
index e41197a08..e1f62ebac 100644
--- a/src/Report/Xml/Node.php
+++ b/src/Report/Xml/Node.php
@@ -38,7 +38,7 @@ public function totals(): Totals
         if ($totalsContainer === null) {
             $totalsContainer = $this->contextNode()->appendChild(
                 $this->dom->createElementNS(
-                    'https://schema.phpunit.de/coverage/1.0',
+                    Facade::XML_NAMESPACE,
                     'totals',
                 ),
             );
@@ -52,7 +52,7 @@ public function totals(): Totals
     public function addDirectory(string $name): Directory
     {
         $dirNode = $this->dom()->createElementNS(
-            'https://schema.phpunit.de/coverage/1.0',
+            Facade::XML_NAMESPACE,
             'directory',
         );
 
@@ -65,7 +65,7 @@ public function addDirectory(string $name): Directory
     public function addFile(string $name, string $href): File
     {
         $fileNode = $this->dom()->createElementNS(
-            'https://schema.phpunit.de/coverage/1.0',
+            Facade::XML_NAMESPACE,
             'file',
         );
 
diff --git a/src/Report/Xml/Project.php b/src/Report/Xml/Project.php
index 21b5a2ce1..4c2295c10 100644
--- a/src/Report/Xml/Project.php
+++ b/src/Report/Xml/Project.php
@@ -35,14 +35,14 @@ public function projectSourceDirectory(): string
     public function buildInformation(): BuildInformation
     {
         $buildNode = $this->dom()->getElementsByTagNameNS(
-            'https://schema.phpunit.de/coverage/1.0',
+            Facade::XML_NAMESPACE,
             'build',
         )->item(0);
 
         if ($buildNode === null) {
             $buildNode = $this->dom()->documentElement->appendChild(
                 $this->dom()->createElementNS(
-                    'https://schema.phpunit.de/coverage/1.0',
+                    Facade::XML_NAMESPACE,
                     'build',
                 ),
             );
@@ -56,14 +56,14 @@ public function buildInformation(): BuildInformation
     public function tests(): Tests
     {
         $testsNode = $this->contextNode()->getElementsByTagNameNS(
-            'https://schema.phpunit.de/coverage/1.0',
+            Facade::XML_NAMESPACE,
             'tests',
         )->item(0);
 
         if ($testsNode === null) {
             $testsNode = $this->contextNode()->appendChild(
                 $this->dom()->createElementNS(
-                    'https://schema.phpunit.de/coverage/1.0',
+                    Facade::XML_NAMESPACE,
                     'tests',
                 ),
             );
@@ -86,7 +86,7 @@ private function init(): void
 
         $this->setContextNode(
             $dom->getElementsByTagNameNS(
-                'https://schema.phpunit.de/coverage/1.0',
+                Facade::XML_NAMESPACE,
                 'project',
             )->item(0),
         );
diff --git a/src/Report/Xml/Report.php b/src/Report/Xml/Report.php
index f39ab860c..34f882171 100644
--- a/src/Report/Xml/Report.php
+++ b/src/Report/Xml/Report.php
@@ -26,7 +26,7 @@ public function __construct(string $name)
         $dom->loadXML('<?xml version="1.0" ?><phpunit xmlns="https://schema.phpunit.de/coverage/1.0"><file /></phpunit>');
 
         $contextNode = $dom->getElementsByTagNameNS(
-            'https://schema.phpunit.de/coverage/1.0',
+            Facade::XML_NAMESPACE,
             'file',
         )->item(0);
 
@@ -44,7 +44,7 @@ public function functionObject(string $name): Method
     {
         $node = $this->contextNode()->appendChild(
             $this->dom()->createElementNS(
-                'https://schema.phpunit.de/coverage/1.0',
+                Facade::XML_NAMESPACE,
                 'function',
             ),
         );
@@ -67,14 +67,14 @@ public function traitObject(string $name): Unit
     public function source(): Source
     {
         $source = $this->contextNode()->getElementsByTagNameNS(
-            'https://schema.phpunit.de/coverage/1.0',
+            Facade::XML_NAMESPACE,
             'source',
         )->item(0);
 
         if ($source === null) {
             $source = $this->contextNode()->appendChild(
                 $this->dom()->createElementNS(
-                    'https://schema.phpunit.de/coverage/1.0',
+                    Facade::XML_NAMESPACE,
                     'source',
                 ),
             );
@@ -95,7 +95,7 @@ private function unitObject(string $tagName, string $name): Unit
     {
         $node = $this->contextNode()->appendChild(
             $this->dom()->createElementNS(
-                'https://schema.phpunit.de/coverage/1.0',
+                Facade::XML_NAMESPACE,
                 $tagName,
             ),
         );
diff --git a/src/Report/Xml/Tests.php b/src/Report/Xml/Tests.php
index c9e9c48ef..1760fdfa5 100644
--- a/src/Report/Xml/Tests.php
+++ b/src/Report/Xml/Tests.php
@@ -34,7 +34,7 @@ public function addTest(string $test, array $result): void
     {
         $node = $this->contextNode->appendChild(
             $this->contextNode->ownerDocument->createElementNS(
-                'https://schema.phpunit.de/coverage/1.0',
+                Facade::XML_NAMESPACE,
                 'test',
             ),
         );
diff --git a/src/Report/Xml/Totals.php b/src/Report/Xml/Totals.php
index 8e285a78e..28612f7aa 100644
--- a/src/Report/Xml/Totals.php
+++ b/src/Report/Xml/Totals.php
@@ -29,27 +29,27 @@ public function __construct(DOMElement $container)
         $dom = $container->ownerDocument;
 
         $this->linesNode = $dom->createElementNS(
-            'https://schema.phpunit.de/coverage/1.0',
+            Facade::XML_NAMESPACE,
             'lines',
         );
 
         $this->methodsNode = $dom->createElementNS(
-            'https://schema.phpunit.de/coverage/1.0',
+            Facade::XML_NAMESPACE,
             'methods',
         );
 
         $this->functionsNode = $dom->createElementNS(
-            'https://schema.phpunit.de/coverage/1.0',
+            Facade::XML_NAMESPACE,
             'functions',
         );
 
         $this->classesNode = $dom->createElementNS(
-            'https://schema.phpunit.de/coverage/1.0',
+            Facade::XML_NAMESPACE,
             'classes',
         );
 
         $this->traitsNode = $dom->createElementNS(
-            'https://schema.phpunit.de/coverage/1.0',
+            Facade::XML_NAMESPACE,
             'traits',
         );
 
diff --git a/src/Report/Xml/Unit.php b/src/Report/Xml/Unit.php
index a00f85d39..84e189fbf 100644
--- a/src/Report/Xml/Unit.php
+++ b/src/Report/Xml/Unit.php
@@ -41,14 +41,14 @@ public function setCrap(float $crap): void
     public function setNamespace(string $namespace): void
     {
         $node = $this->contextNode->getElementsByTagNameNS(
-            'https://schema.phpunit.de/coverage/1.0',
+            Facade::XML_NAMESPACE,
             'namespace',
         )->item(0);
 
         if ($node === null) {
             $node = $this->contextNode->appendChild(
                 $this->contextNode->ownerDocument->createElementNS(
-                    'https://schema.phpunit.de/coverage/1.0',
+                    Facade::XML_NAMESPACE,
                     'namespace',
                 ),
             );
@@ -63,7 +63,7 @@ public function addMethod(string $name): Method
     {
         $node = $this->contextNode->appendChild(
             $this->contextNode->ownerDocument->createElementNS(
-                'https://schema.phpunit.de/coverage/1.0',
+                Facade::XML_NAMESPACE,
                 'method',
             ),
         );