diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index e0b8605..d897b86 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -48,7 +48,7 @@ jobs:
         run: vendor/bin/phpstan analyze -c phpstan.neon.dist
 
       - name: PHPUnit
-        run: vendor/bin/phpunit --coverage-text --coverage-clover=coverage.clover
+        run: vendor/bin/phpunit --verbose --coverage-text --coverage-clover=coverage.clover
 
       - name: Infection
         if: ${{ matrix.experimental == false }}
diff --git a/composer.json b/composer.json
index b663f36..301c420 100644
--- a/composer.json
+++ b/composer.json
@@ -15,9 +15,9 @@
     },
     "require-dev": {
         "beberlei/assert": "~v3.3",
-        "infection/infection": "^0.27",
-        "phpstan/phpstan": "^1.10",
-        "phpunit/phpunit": "^10.5",
+        "infection/infection": "^0.26",
+        "phpstan/phpstan": "^1.9",
+        "phpunit/phpunit": "^9.5",
         "roave/security-advisories": "dev-latest"
     },
     "autoload": {
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 83ee3b2..5084623 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -1,24 +1,29 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.5/phpunit.xsd"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.5/phpunit.xsd"
          bootstrap="vendor/autoload.php"
+         cacheResultFile=".phpunit.cache/test-results"
          executionOrder="depends,defects"
+         beStrictAboutCoversAnnotation="true"
          beStrictAboutOutputDuringTests="true"
+         beStrictAboutTodoAnnotatedTests="true"
          failOnRisky="true"
          failOnWarning="true"
-         cacheDirectory=".phpunit.cache"
-         beStrictAboutCoverageMetadata="true">
-  <testsuites>
-    <testsuite name="default">
-      <directory>tests</directory>
-    </testsuite>
-  </testsuites>
-  <source>
-    <include>
-      <directory suffix=".php">src</directory>
-    </include>
-    <exclude>
-      <directory suffix="Test.php">src/</directory>
-    </exclude>
-  </source>
+         verbose="true">
+
+    <testsuites>
+        <testsuite name="default">
+            <directory>tests</directory>
+        </testsuite>
+    </testsuites>
+
+    <coverage cacheDirectory=".phpunit.cache/code-coverage"
+              processUncoveredFiles="true">
+        <include>
+            <directory suffix=".php">src</directory>
+        </include>
+        <exclude>
+            <directory suffix="Test.php">src/</directory>
+        </exclude>
+    </coverage>
 </phpunit>