diff --git a/phpstan-baseline.neon b/phpstan-baseline.neon
index 3fd6b490fa..8017126337 100644
--- a/phpstan-baseline.neon
+++ b/phpstan-baseline.neon
@@ -4155,11 +4155,6 @@ parameters:
 			count: 1
 			path: src/bundle/Debug/IbexaDebugBundle.php
 
-		-
-			message: "#^Method Ibexa\\\\Bundle\\\\Debug\\\\Twig\\\\DebugTemplate\\:\\:display\\(\\) has no return type specified\\.$#"
-			count: 1
-			path: src/bundle/Debug/Twig/DebugTemplate.php
-
 		-
 			message: "#^Method Ibexa\\\\Bundle\\\\Debug\\\\Twig\\\\DebugTemplate\\:\\:display\\(\\) has parameter \\$blocks with no value type specified in iterable type array\\.$#"
 			count: 1
@@ -4170,11 +4165,6 @@ parameters:
 			count: 1
 			path: src/bundle/Debug/Twig/DebugTemplate.php
 
-		-
-			message: "#^Method Ibexa\\\\Bundle\\\\Debug\\\\Twig\\\\DebugTemplate\\:\\:doDisplay\\(\\) has no return type specified\\.$#"
-			count: 1
-			path: src/bundle/Debug/Twig/DebugTemplate.php
-
 		-
 			message: "#^Method Ibexa\\\\Bundle\\\\Debug\\\\Twig\\\\DebugTemplate\\:\\:doDisplay\\(\\) has parameter \\$blocks with no value type specified in iterable type array\\.$#"
 			count: 1
@@ -4185,16 +4175,6 @@ parameters:
 			count: 1
 			path: src/bundle/Debug/Twig/DebugTemplate.php
 
-		-
-			message: "#^Method Ibexa\\\\Bundle\\\\Debug\\\\Twig\\\\DebugTemplate\\:\\:getDebugInfo\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/bundle/Debug/Twig/DebugTemplate.php
-
-		-
-			message: "#^Method Ibexa\\\\Bundle\\\\Debug\\\\Twig\\\\DebugTemplate\\:\\:getSourceContext\\(\\) should return Twig\\\\Source but returns string\\.$#"
-			count: 1
-			path: src/bundle/Debug/Twig/DebugTemplate.php
-
 		-
 			message: "#^Parameter \\#1 \\$haystack of function stripos expects string, string\\|false\\|null given\\.$#"
 			count: 1
diff --git a/src/bundle/Debug/Twig/DebugTemplate.php b/src/bundle/Debug/Twig/DebugTemplate.php
index d943744d69..958602d601 100644
--- a/src/bundle/Debug/Twig/DebugTemplate.php
+++ b/src/bundle/Debug/Twig/DebugTemplate.php
@@ -7,6 +7,7 @@
 namespace Ibexa\Bundle\Debug\Twig;
 
 use Symfony\Component\Filesystem\Filesystem;
+use Twig\Source;
 use Twig\Template;
 
 /**
@@ -19,7 +20,7 @@ class DebugTemplate extends Template
 {
     private $fileSystem;
 
-    public function display(array $context, array $blocks = [])
+    public function display(array $context, array $blocks = []): void
     {
         $this->fileSystem = $this->fileSystem ?: new Filesystem();
 
@@ -65,34 +66,25 @@ public function display(array $context, array $blocks = [])
         }
     }
 
-    /**
-     * {@inheritdoc}
-     */
-    public function getTemplateName()
+    public function getTemplateName(): string
     {
         return '';
     }
 
-    /**
-     * {@inheritdoc}
-     */
-    public function getSourceContext()
+    public function getSourceContext(): Source
     {
-        return '';
+        return new Source('', '');
     }
 
-    /**
-     * {@inheritdoc}
-     */
-    protected function doDisplay(array $context, array $blocks = [])
+    protected function doDisplay(array $context, array $blocks = []): string
     {
         return '';
     }
 
     /**
-     * {@inheritdoc}
+     * @return array<mixed>
      */
-    public function getDebugInfo()
+    public function getDebugInfo(): array
     {
         return [];
     }