diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e0cf67f..d9d0131 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -27,7 +27,7 @@ jobs:
           php-version: "${{ matrix.php-version }}"
           ini-values: "${{ env.INI_VALUES }}"
           tools: composer-normalize,composer-require-checker,composer-unused
-      - uses: "ramsey/composer-install@v2"
+      - uses: "ramsey/composer-install@v3"
 
       - run: "composer validate --strict"
       - run: "composer-normalize --dry-run"
@@ -54,7 +54,7 @@ jobs:
           coverage: "${{ matrix.code-coverage }}"
           php-version: "${{ matrix.php-version }}"
           ini-values: "${{ env.INI_VALUES }}"
-      - uses: "ramsey/composer-install@v2"
+      - uses: "ramsey/composer-install@v3"
 
       - run: "vendor/bin/phpunit --no-coverage --no-logging"
         if: ${{ matrix.code-coverage == 'none' }}
@@ -79,7 +79,7 @@ jobs:
           coverage: "none"
           php-version: "${{ matrix.php-version }}"
           ini-values: "${{ env.INI_VALUES }}"
-      - uses: "ramsey/composer-install@v2"
+      - uses: "ramsey/composer-install@v3"
 
       - run: "vendor/bin/php-cs-fixer fix --verbose --dry-run --diff"
 
@@ -98,6 +98,6 @@ jobs:
           coverage: "none"
           php-version: "${{ matrix.php-version }}"
           ini-values: "${{ env.INI_VALUES }}"
-      - uses: "ramsey/composer-install@v2"
+      - uses: "ramsey/composer-install@v3"
 
       - run: "vendor/bin/phpstan analyse --no-progress --error-format=github"
diff --git a/composer.json b/composer.json
index d804396..25b0cf6 100644
--- a/composer.json
+++ b/composer.json
@@ -16,8 +16,8 @@
         "friendsofphp/php-cs-fixer": "^3.64.0"
     },
     "require-dev": {
-        "phpstan/phpstan": "^1.12.10",
-        "phpstan/phpstan-phpunit": "^1.4.0",
+        "phpstan/phpstan": "^2.0.1",
+        "phpstan/phpstan-phpunit": "^2",
         "phpunit/phpunit": "^11.4.3"
     },
     "autoload": {
diff --git a/phpstan-baseline.neon b/phpstan-baseline.neon
index 1b3fa75..3f19c6c 100644
--- a/phpstan-baseline.neon
+++ b/phpstan-baseline.neon
@@ -1,6 +1,13 @@
 parameters:
 	ignoreErrors:
 		-
-			message: "#^Call to static method PHPUnit\\\\Framework\\\\Assert\\:\\:assertNotEmpty\\(\\) with false will always evaluate to false\\.$#"
+			message: '#^Call to static method PHPUnit\\Framework\\Assert\:\:assertNotEmpty\(\) with false will always evaluate to false\.$#'
+			identifier: staticMethod.impossibleType
+			count: 1
+			path: tests/ConfigTest.php
+
+		-
+			message: '#^Strict comparison using \!\=\= between false and array\{allow_mixed\: true\}\|array\{comment_type\: ''all_multiline''\}\|array\{const\: ''single'', property\: ''single'', method\: ''single''\}\|array\{default\: ''align_single_space''\}\|array\{include\: array\{''@internal''\}\}\|array\{keep_multiple_spaces_after_comma\: true\}\|array\{order\: array\{''use_trait'', ''constant_public'', ''constant_protected'', ''constant_private'', ''property'', ''construct'', ''destruct'', ''magic'', \.\.\.\}\}\|array\{spacing\: ''one''\}\|true will always evaluate to true\.$#'
+			identifier: notIdentical.alwaysTrue
 			count: 1
 			path: tests/ConfigTest.php
diff --git a/tests/ConfigTest.php b/tests/ConfigTest.php
index a8796bf..6e1218b 100644
--- a/tests/ConfigTest.php
+++ b/tests/ConfigTest.php
@@ -4,7 +4,6 @@
 
 namespace SlamCsFixer\Tests;
 
-use PhpCsFixer\ConfigInterface;
 use PhpCsFixer\Fixer\DeprecatedFixerInterface;
 use PhpCsFixer\Fixer\FixerInterface;
 use PhpCsFixer\FixerFactory;
@@ -23,7 +22,6 @@ public function testConfig(): void
     {
         $config = new Config();
 
-        self::assertInstanceOf(ConfigInterface::class, $config);
         self::assertNotEmpty($config->getCustomFixers());
     }