diff --git a/.gitattributes b/.gitattributes
index ed6e29a8..5d13ab73 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -2,3 +2,4 @@
 /tests export-ignore
 /.* export-ignore
 /phpunit.xml.dist export-ignore
+/UPGRADE.md
diff --git a/.gitignore b/.gitignore
index 0640915d..a3ec4bab 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@ composer.lock
 .DS_Store
 .php_cs.cache
 .hg
+.phpunit.result.cache
diff --git a/README.md b/README.md
index 63670383..9ca3c6a6 100644
--- a/README.md
+++ b/README.md
@@ -97,7 +97,7 @@ See also the list of [contributors](https://github.com/Seldaek/monolog/contribut
 
 ### License
 
-Monolog is licensed under the MIT License - see the `LICENSE` file for details
+Monolog is licensed under the MIT License - see the [LICENSE](LICENSE) file for details
 
 ### Acknowledgements
 
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 1a676b24..1104f47e 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -1,6 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
-<phpunit bootstrap="tests/bootstrap.php" colors="true" beStrictAboutTestsThatDoNotTestAnything="false">
+<phpunit
+        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:noNamespaceSchemaLocation="./vendor/phpunit/phpunit/phpunit.xsd"
+        bootstrap="tests/bootstrap.php" colors="true"
+        beStrictAboutTestsThatDoNotTestAnything="false"
+>
     <testsuites>
         <testsuite name="Monolog Test Suite">
             <directory>tests/Monolog/</directory>