diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index a1bb177..302d186 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -54,7 +54,7 @@ jobs:
         run: make analyse
 
   tests:
-    name: "Tests on PHP ${{ matrix.php-version }} ${{ matrix.prefer-lowest }}"
+    name: "Tests ${{ matrix.php-version }} ${{ matrix.prefer-lowest }}"
 
     runs-on: ubuntu-latest
 
@@ -78,4 +78,8 @@ jobs:
         run: composer update ${{ matrix.prefer-lowest }} --no-interaction --no-progress --optimize-autoloader
 
       - name: "Run tests"
-        run: vendor/bin/phpunit --exclude-group=e2e
+        run: vendor/bin/paratest
+
+      - name: "Run E2E tests"
+        if: ${{ env.MOBILEPAY_API_KEY != '' }}
+        run: vendor/bin/paratest --group=e2e
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 62895e4..878ef9c 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phpunit
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd"
+    xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.5/phpunit.xsd"
     bootstrap="vendor/autoload.php"
     beStrictAboutCoversAnnotation="true"
     beStrictAboutOutputDuringTests="true"
@@ -23,6 +23,11 @@
             <directory suffix="Test.php">src</directory>
         </testsuite>
     </testsuites>
+    <groups>
+        <exclude>
+            <group>e2e</group>
+        </exclude>
+    </groups>
     <php>
         <env name="MOBILEPAY_API_KEY" value=""/>
         <env name="MOBILEPAY_PAYMENTPOINT_ID" value=""/>