diff --git a/rector.php b/rector.php
index d8ab56f3cc8e..e16de7bae441 100644
--- a/rector.php
+++ b/rector.php
@@ -50,6 +50,7 @@
 use Rector\Privatization\Rector\Property\PrivatizeFinalClassPropertyRector;
 use Rector\Strict\Rector\Empty_\DisallowedEmptyRuleFixerRector;
 use Rector\Strict\Rector\If_\BooleanInIfConditionRuleFixerRector;
+use Rector\TypeDeclaration\Rector\ClassMethod\AddMethodCallBasedStrictParamTypeRector;
 use Rector\TypeDeclaration\Rector\ClassMethod\ReturnNeverTypeRector;
 use Rector\TypeDeclaration\Rector\Closure\AddClosureVoidReturnTypeWhereNoReturnRector;
 use Rector\TypeDeclaration\Rector\Empty_\EmptyOnNullableObjectToInstanceOfRector;
@@ -213,6 +214,7 @@
         ExplicitBoolCompareRector::class,
         AddClosureVoidReturnTypeWhereNoReturnRector::class,
         AddFunctionVoidReturnTypeWhereNoReturnRector::class,
+        AddMethodCallBasedStrictParamTypeRector::class,
     ])
     ->withConfiguredRule(StringClassNameToClassConstantRector::class, [
         // keep '\\' prefix string on string '\Foo\Bar'
diff --git a/system/Database/Postgre/Builder.php b/system/Database/Postgre/Builder.php
index 1071dfedf06b..0d2dce0957ae 100644
--- a/system/Database/Postgre/Builder.php
+++ b/system/Database/Postgre/Builder.php
@@ -411,10 +411,8 @@ static function ($key, $value) use ($table, $alias, $that) {
      * Returns cast expression.
      *
      * @TODO move this to BaseBuilder in 4.5.0
-     *
-     * @param float|int|string $expression
      */
-    private function cast($expression, ?string $type): string
+    private function cast(string $expression, ?string $type): string
     {
         return ($type === null) ? $expression : 'CAST(' . $expression . ' AS ' . strtoupper($type) . ')';
     }
diff --git a/tests/system/API/ResponseTraitTest.php b/tests/system/API/ResponseTraitTest.php
index 0887c673d616..82229b014bd4 100644
--- a/tests/system/API/ResponseTraitTest.php
+++ b/tests/system/API/ResponseTraitTest.php
@@ -574,7 +574,7 @@ public function testValidContentTypes(): void
         }
     }
 
-    private function tryValidContentType($mimeType, $contentType): void
+    private function tryValidContentType(string $mimeType, string $contentType): void
     {
         $original                = $_SERVER;
         $_SERVER['CONTENT_TYPE'] = $mimeType;
diff --git a/tests/system/Router/AutoRouterImprovedTest.php b/tests/system/Router/AutoRouterImprovedTest.php
index 5975280bcdfd..0f4c75162a2f 100644
--- a/tests/system/Router/AutoRouterImprovedTest.php
+++ b/tests/system/Router/AutoRouterImprovedTest.php
@@ -45,7 +45,7 @@ protected function setUp(): void
         $this->collection      = new RouteCollection(Services::locator(), $moduleConfig, new Routing());
     }
 
-    private function createNewAutoRouter($namespace = 'CodeIgniter\Router\Controllers'): AutoRouterImproved
+    private function createNewAutoRouter(string $namespace = 'CodeIgniter\Router\Controllers'): AutoRouterImproved
     {
         return new AutoRouterImproved(
             [],
diff --git a/tests/system/Test/BootstrapFCPATHTest.php b/tests/system/Test/BootstrapFCPATHTest.php
index 61d2e1ca1695..d58bb847360d 100644
--- a/tests/system/Test/BootstrapFCPATHTest.php
+++ b/tests/system/Test/BootstrapFCPATHTest.php
@@ -102,7 +102,7 @@ private function fileContents()
         return $fileContents . ('echo FCPATH;' . PHP_EOL);
     }
 
-    private function readOutput($file)
+    private function readOutput(string $file)
     {
         ob_start();
         system('php -f ' . $file);