diff --git a/Tests/Controller/ProfilerControllerTest.php b/Tests/Controller/ProfilerControllerTest.php
index 5664b8b9..67355d90 100644
--- a/Tests/Controller/ProfilerControllerTest.php
+++ b/Tests/Controller/ProfilerControllerTest.php
@@ -136,7 +136,7 @@ public function testToolbarActionWithEmptyToken($token)
         $this->assertEquals(200, $response->getStatusCode());
     }
 
-    public function getEmptyTokenCases()
+    public static function getEmptyTokenCases()
     {
         return [
             [null],
@@ -165,7 +165,7 @@ public function testOpeningDisallowedPaths($path, $isAllowed)
         }
     }
 
-    public function getOpenFileCases()
+    public static function getOpenFileCases()
     {
         return [
             ['README.md', true],
@@ -355,7 +355,7 @@ public function testPhpinfoAction()
         $this->assertStringContainsString('PHP License', $client->getResponse()->getContent());
     }
 
-    public function provideCspVariants()
+    public static function provideCspVariants()
     {
         return [
             [true],
diff --git a/Tests/Csp/ContentSecurityPolicyHandlerTest.php b/Tests/Csp/ContentSecurityPolicyHandlerTest.php
index c345b5fb..7d5c0761 100644
--- a/Tests/Csp/ContentSecurityPolicyHandlerTest.php
+++ b/Tests/Csp/ContentSecurityPolicyHandlerTest.php
@@ -46,7 +46,7 @@ public function testOnKernelResponse($nonce, $expectedNonce, Request $request, R
         }
     }
 
-    public function provideRequestAndResponses()
+    public static function provideRequestAndResponses()
     {
         $nonce = bin2hex(random_bytes(16));
 
@@ -73,7 +73,7 @@ public function provideRequestAndResponses()
         ];
     }
 
-    public function provideRequestAndResponsesForOnKernelResponse()
+    public static function provideRequestAndResponsesForOnKernelResponse()
     {
         $nonce = bin2hex(random_bytes(16));
 
diff --git a/Tests/DependencyInjection/ConfigurationTest.php b/Tests/DependencyInjection/ConfigurationTest.php
index a0bc7f43..d957cafc 100644
--- a/Tests/DependencyInjection/ConfigurationTest.php
+++ b/Tests/DependencyInjection/ConfigurationTest.php
@@ -29,7 +29,7 @@ public function testConfigTree(array $options, array $expectedResult)
         $this->assertEquals($expectedResult, $config);
     }
 
-    public function getDebugModes()
+    public static function getDebugModes()
     {
         return [
             [
@@ -71,7 +71,7 @@ public function testConfigTreeUsingInterceptRedirects(bool $interceptRedirects,
         $this->assertEquals($expectedResult, $config);
     }
 
-    public function getInterceptRedirectsConfiguration()
+    public static function getInterceptRedirectsConfiguration()
     {
         return [
             [
diff --git a/Tests/DependencyInjection/WebProfilerExtensionTest.php b/Tests/DependencyInjection/WebProfilerExtensionTest.php
index fbfd2ed5..732761a5 100644
--- a/Tests/DependencyInjection/WebProfilerExtensionTest.php
+++ b/Tests/DependencyInjection/WebProfilerExtensionTest.php
@@ -103,7 +103,7 @@ public function testDefaultConfig($debug)
         self::assertSaneContainer($this->getCompiledContainer());
     }
 
-    public function getDebugModes()
+    public static function getDebugModes()
     {
         return [
             ['debug' => false],
@@ -129,7 +129,7 @@ public function testToolbarConfig(bool $toolbarEnabled, bool $listenerInjected,
         }
     }
 
-    public function getToolbarConfig()
+    public static function getToolbarConfig()
     {
         return [
             [
@@ -170,7 +170,7 @@ public function testToolbarConfigUsingInterceptRedirects(
         }
     }
 
-    public function getInterceptRedirectsToolbarConfig()
+    public static function getInterceptRedirectsToolbarConfig()
     {
         return [
              [
diff --git a/Tests/EventListener/WebDebugToolbarListenerTest.php b/Tests/EventListener/WebDebugToolbarListenerTest.php
index 845d1413..5a07af8f 100644
--- a/Tests/EventListener/WebDebugToolbarListenerTest.php
+++ b/Tests/EventListener/WebDebugToolbarListenerTest.php
@@ -39,7 +39,7 @@ public function testInjectToolbar($content, $expected)
         $this->assertEquals($expected, $response->getContent());
     }
 
-    public function getInjectToolbarTests()
+    public static function getInjectToolbarTests()
     {
         return [
             ['<html><head></head><body></body></html>', "<html><head></head><body>\nWDT\n</body></html>"],
@@ -147,7 +147,7 @@ public function testToolbarIsNotInjectedOnRedirection($statusCode)
         $this->assertEquals('<html><head></head><body></body></html>', $response->getContent());
     }
 
-    public function provideRedirects()
+    public static function provideRedirects()
     {
         return [
             [301],
diff --git a/Tests/Resources/IconTest.php b/Tests/Resources/IconTest.php
index 9ce9a4c5..721ebf59 100644
--- a/Tests/Resources/IconTest.php
+++ b/Tests/Resources/IconTest.php
@@ -32,7 +32,7 @@ public function testIconFileContents($iconFilePath)
         $this->assertMatchesRegularExpression('~<svg .* viewBox="0 0 \d+ \d+".+>.*</svg>~s', file_get_contents($iconFilePath), sprintf('The SVG file of the "%s" icon must include a "viewBox" attribute.', $iconFilePath));
     }
 
-    public function provideIconFilePaths()
+    public static function provideIconFilePaths()
     {
         return array_map(function ($filePath) { return (array) $filePath; }, glob(__DIR__.'/../../Resources/views/Icon/*.svg'));
     }
diff --git a/Tests/Twig/WebProfilerExtensionTest.php b/Tests/Twig/WebProfilerExtensionTest.php
index 6b026bcc..1bb1296b 100644
--- a/Tests/Twig/WebProfilerExtensionTest.php
+++ b/Tests/Twig/WebProfilerExtensionTest.php
@@ -42,7 +42,7 @@ class_exists(EscaperExtension::class); // Load twig_escape_filter()
         self::assertSame($dump2HasHeader, str_contains($dump2, $needle));
     }
 
-    public function provideMessages(): iterable
+    public static function provideMessages(): iterable
     {
         yield ['Some message', ['foo' => 'foo', 'bar' => 'bar'], false, true];
         yield ['Some message {@see some text}', ['foo' => 'foo', 'bar' => 'bar'], false, true];