diff --git a/src/ServiceProvider.php b/src/ServiceProvider.php
index 2845159..e37652c 100644
--- a/src/ServiceProvider.php
+++ b/src/ServiceProvider.php
@@ -232,12 +232,7 @@ function () {
                 );
 
                 foreach ($this->app['config']->get('twigbridge.twig.safe_classes', []) as $safeClass => $strategy) {
-                    // "Since twig/twig 3.10: The "Twig\Extension\EscaperExtension::addSafeClass()" method is deprecated, use the "Twig\Runtime\EscaperRuntime::addSafeClass()" method instead."
-                    if (class_exists(EscaperRuntime::class)) {
-                        $twig->getRuntime(EscaperRuntime::class)->addSafeClass($safeClass, $strategy);
-                    } else {
-                        $twig->getExtension(EscaperExtension::class)->addSafeClass($safeClass, $strategy);
-                    }
+                    $twig->getExtension(EscaperExtension::class)->addSafeClass($safeClass, $strategy);
                 }
 
                 // Instantiate and add extensions
diff --git a/tests/Node/GetAttrTest.php b/tests/Node/GetAttrTest.php
index 8deffb5..99ac401 100644
--- a/tests/Node/GetAttrTest.php
+++ b/tests/Node/GetAttrTest.php
@@ -122,10 +122,10 @@ public function getTests()
         $node = $this->getNode($expr, $attr, $args, Template::ARRAY_CALL);
         $tests[] = [
             $node,
-            '(($__internal_%s = // line 1' . "\n"
+            '(($_v0 = // line 1' . "\n"
                 . '($context["foo"] ?? null))'
-                . ' && is_array($__internal_%s)'
-                . ' || $__internal_%s instanceof ArrayAccess ? ($__internal_%s["bar"] ?? null) : null)',
+                . ' && is_array($_v0)'
+                . ' || $_v0 instanceof ArrayAccess ? ($_v0["bar"] ?? null) : null)',
             null,
             true,
         ];
diff --git a/tests/Node/TemplateForTest.php b/tests/Node/TemplateForTest.php
index ba45261..8b22d3b 100644
--- a/tests/Node/TemplateForTest.php
+++ b/tests/Node/TemplateForTest.php
@@ -5,6 +5,7 @@
 use Twig\Environment;
 use Twig\Source;
 use Twig\Template;
+use Twig\TemplateWrapper;
 
 class TemplateForTest extends Template
 {
@@ -36,23 +37,24 @@ public function getTrue()
         return true;
     }
 
-    public function getTemplateName()
+    public function getTemplateName(): string
     {
         return $this->name;
     }
 
-    public function getDebugInfo()
+    public function getDebugInfo(): array
     {
         return [];
     }
 
-    protected function doGetParent(array $context)
+    protected function doGetParent(array $context): bool|string|self|TemplateWrapper
     {
         return false;
     }
 
-    protected function doDisplay(array $context, array $blocks = [])
+    protected function doDisplay(array $context, array $blocks = []): iterable
     {
+        return [];
     }
 
     /**
@@ -60,7 +62,7 @@ protected function doDisplay(array $context, array $blocks = [])
      *
      * @return Source
      */
-    public function getSourceContext()
+    public function getSourceContext(): Source
     {
         return new Source('', $this->getTemplateName());
     }
diff --git a/tests/TwigIntegrationTests/TwigIntegrationTest.php b/tests/TwigIntegrationTests/TwigIntegrationTest.php
index ce04ff5..4483a02 100644
--- a/tests/TwigIntegrationTests/TwigIntegrationTest.php
+++ b/tests/TwigIntegrationTests/TwigIntegrationTest.php
@@ -112,11 +112,6 @@ protected function doIntegrationTest(
                 $twig->addFunction($function);
             }
 
-            // avoid using the same PHP class name for different cases
-            $p = new \ReflectionProperty(Environment::class, 'templateClassPrefix');
-            $p->setAccessible(true);
-            $p->setValue($twig, '__TwigTemplate_' . hash('sha256', uniqid(mt_rand(), true), false) . '_');
-
             $deprecations = [];
             try {
                 $prevHandler = set_error_handler(