diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index b4003563..c65978bb 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance" backupGlobals="false" colors="true" bootstrap="vendor/autoload.php" failOnRisky="true" failOnWarning="true" executionOrder="default" resolveDependencies="true" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.1/phpunit.xsd">
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" backupGlobals="false" colors="true" bootstrap="vendor/autoload.php" failOnRisky="true" failOnWarning="true" executionOrder="default" resolveDependencies="true" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.1/phpunit.xsd">
   <coverage/>
   <php>
     <ini name="error_reporting" value="-1"/>
diff --git a/psalm.xml b/psalm.xml
index 0a53528c..906206a6 100644
--- a/psalm.xml
+++ b/psalm.xml
@@ -3,7 +3,7 @@
     errorLevel="1"
     findUnusedBaselineEntry="true"
     findUnusedCode="false"
-    xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xmlns="https://getpsalm.org/schema/config"
     xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
 >
diff --git a/psalm4.xml b/psalm4.xml
index 36d7a96e..10d319ae 100644
--- a/psalm4.xml
+++ b/psalm4.xml
@@ -3,7 +3,7 @@
     errorLevel="1"
     findUnusedBaselineEntry="true"
     findUnusedCode="false"
-    xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xmlns="https://getpsalm.org/schema/config"
     xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
 >