diff --git a/composer.json b/composer.json
index fd16c2f78cf..ac7db5e7d42 100644
--- a/composer.json
+++ b/composer.json
@@ -42,14 +42,14 @@
     "require-dev": {
         "doctrine/coding-standard": "10.0.0",
         "jetbrains/phpstorm-stubs": "2022.2",
-        "phpstan/phpstan": "1.8.2",
+        "phpstan/phpstan": "1.8.3",
         "phpstan/phpstan-strict-rules": "^1.3",
         "phpunit/phpunit": "9.5.24",
         "psalm/plugin-phpunit": "0.17.0",
         "squizlabs/php_codesniffer": "3.7.1",
         "symfony/cache": "^5.4|^6.0",
         "symfony/console": "^4.4|^5.4|^6.0",
-        "vimeo/psalm": "4.26.0"
+        "vimeo/psalm": "4.27.0"
     },
     "suggest": {
         "symfony/console": "For helpful console commands such as SQL execution and import of files."
diff --git a/phpstan.neon.dist b/phpstan.neon.dist
index b416e20db0a..ad09ce5efa5 100644
--- a/phpstan.neon.dist
+++ b/phpstan.neon.dist
@@ -27,7 +27,6 @@ parameters:
         -
             message: '~^Only booleans are allowed in .*, mixed given~'
             paths:
-                - src/Driver/*/Driver.php
                 - src/Platforms/*Platform.php
                 - src/Query/QueryBuilder.php
                 - src/Schema/*SchemaManager.php
@@ -101,11 +100,6 @@ parameters:
                 - src/Driver/Mysqli/Exception/InvalidCharset.php
                 - src/Driver/Mysqli/Exception/StatementError.php
 
-        -
-            message: '~^Unable to resolve the template type T in call to method Doctrine\\DBAL\\Portability\\Converter\:\:compose\(\)$~'
-            paths:
-                - src/Portability/Converter.php
-
         # Type check for legacy implementations of the Connection interface
         # TODO: remove in 4.0.0
         - "~Call to function method_exists\\(\\) with Doctrine\\\\DBAL\\\\Driver\\\\Connection and 'getNativeConnection' will always evaluate to true\\.~"
diff --git a/tests/Functional/Platform/DateExpressionTest.php b/tests/Functional/Platform/DateExpressionTest.php
index 972d2f716aa..05c812fdfac 100644
--- a/tests/Functional/Platform/DateExpressionTest.php
+++ b/tests/Functional/Platform/DateExpressionTest.php
@@ -2,7 +2,6 @@
 
 namespace Doctrine\DBAL\Tests\Functional\Platform;
 
-use DateTimeImmutable;
 use Doctrine\DBAL\Schema\Table;
 use Doctrine\DBAL\Tests\FunctionalTestCase;
 
@@ -30,21 +29,10 @@ public function testDifference(string $date1, string $date2, int $expected): voi
         self::assertEquals($expected, $diff);
     }
 
-    /** @return string[][]|int[][] */
+    /** @return array<string, array{string, string, int}> */
     public static function differenceProvider(): iterable
     {
-        $date1    = new DateTimeImmutable();
-        $date2    = new DateTimeImmutable('2018-04-10 10:10:10');
-        $expected = $date1->modify('midnight')->diff(
-            $date2->modify('midnight'),
-        )->days;
-
         return [
-            'dynamic'  => [
-                $date1->format('Y-m-d H:i:s'),
-                $date2->format('Y-m-d H:i:s'),
-                $expected,
-            ],
             'same day' => ['2018-04-14 23:59:59', '2018-04-14 00:00:00', 0],
             'midnight' => ['2018-04-14 00:00:00', '2018-04-13 23:59:59', 1],
         ];