diff --git a/src/ApiException.php b/src/ApiException.php
index 3dfee3c..247a5dc 100644
--- a/src/ApiException.php
+++ b/src/ApiException.php
@@ -13,13 +13,13 @@ abstract class ApiException extends IdException implements Jsonable, \JsonSerial
     protected $headers = [];
 
     /**
-     * @param int        $statusCode
-     * @param string     $id
-     * @param string     $message
-     * @param \Exception $previous
-     * @param array      $headers
+     * @param int $statusCode
+     * @param string $id
+     * @param string $message
+     * @param \Throwable|null $previous
+     * @param array $headers
      */
-    public function __construct($statusCode = 0, $id = '', $message = '', \Exception $previous = null, array $headers = [])
+    public function __construct($statusCode = 0, $id = '', $message = '', ?\Throwable $previous = null, array $headers = [])
     {
         $this->headers = $headers;
 
diff --git a/src/BadRequestApiException.php b/src/BadRequestApiException.php
index c3a52b2..90b8550 100644
--- a/src/BadRequestApiException.php
+++ b/src/BadRequestApiException.php
@@ -2,16 +2,15 @@
 
 namespace Lanin\Laravel\ApiExceptions;
 
-use Exception;
 use Lanin\Laravel\ApiExceptions\Contracts\DontReport;
 
 class BadRequestApiException extends ApiException implements DontReport
 {
     /**
      * @param string $message
-     * @param Exception $previous
+     * @param \Throwable|null $previous
      */
-    public function __construct($message = '', Exception $previous = null)
+    public function __construct($message = '', ?\Throwable $previous = null)
     {
         if (empty($message)) {
             $message = 'The server cannot process the request due to its malformed syntax.';
diff --git a/src/ConflictApiException.php b/src/ConflictApiException.php
index 5664b49..42651ed 100644
--- a/src/ConflictApiException.php
+++ b/src/ConflictApiException.php
@@ -2,16 +2,15 @@
 
 namespace Lanin\Laravel\ApiExceptions;
 
-use Exception;
 use Lanin\Laravel\ApiExceptions\Contracts\DontReport;
 
 class ConflictApiException extends ApiException implements DontReport
 {
     /**
      * @param string $message
-     * @param Exception $previous
+     * @param \Throwable $previous
      */
-    public function __construct($message = '', Exception $previous = null)
+    public function __construct($message = '', ?\Throwable $previous = null)
     {
         if (empty($message)) {
             $message = 'Request could not be processed because of conflict.';
diff --git a/src/ExceptionHandlerTrait.php b/src/ExceptionHandlerTrait.php
index 07926bc..db5d3fe 100644
--- a/src/ExceptionHandlerTrait.php
+++ b/src/ExceptionHandlerTrait.php
@@ -2,7 +2,6 @@
 
 namespace Lanin\Laravel\ApiExceptions;
 
-use Throwable;
 use Illuminate\Auth\Access\AuthorizationException;
 use Illuminate\Auth\AuthenticationException;
 use Illuminate\Database\Eloquent\ModelNotFoundException;
@@ -16,11 +15,11 @@ trait ExceptionHandlerTrait
      * Report or log an exception.
      * This is a great spot to send exceptions to Sentry, Bugsnag, etc.
      *
-     * @param  Throwable $e
+     * @param  \Throwable $e
      * @return void
-     * @throws Exception
+     * @throws \Throwable
      */
-    public function report(Throwable $e)
+    public function report(\Throwable $e)
     {
         parent::report($e instanceof ApiException ? $e->toReport() : $e);
     }
@@ -29,10 +28,10 @@ public function report(Throwable $e)
      * Render an exception into an HTTP response.
      *
      * @param  \Illuminate\Http\Request  $request
-     * @param  Throwable  $e
+     * @param  \Throwable  $e
      * @return \Illuminate\Http\Response
      */
-    public function render($request, Throwable $e)
+    public function render($request, \Throwable $e)
     {
         $e = $this->resolveException($e);
 
@@ -44,10 +43,10 @@ public function render($request, Throwable $e)
     /**
      * Define exception.
      *
-     * @param  Throwable $e
+     * @param  \Throwable $e
      * @return ApiException
      */
-    protected function resolveException(Throwable $e)
+    protected function resolveException(\Throwable $e)
     {
         switch (true) {
             case $e instanceof ApiException:
diff --git a/src/ForbiddenApiException.php b/src/ForbiddenApiException.php
index 765a169..e1d71a8 100644
--- a/src/ForbiddenApiException.php
+++ b/src/ForbiddenApiException.php
@@ -2,16 +2,15 @@
 
 namespace Lanin\Laravel\ApiExceptions;
 
-use Exception;
 use Lanin\Laravel\ApiExceptions\Contracts\DontReport;
 
 class ForbiddenApiException extends ApiException implements DontReport
 {
     /**
      * @param string $message
-     * @param Exception $previous
+     * @param \Throwable|null $previous
      */
-    public function __construct($message = '', Exception $previous = null)
+    public function __construct($message = '', ?\Throwable $previous = null)
     {
         if (empty($message)) {
             $message = "You don't have permissions to perform this request.";
diff --git a/src/IdException.php b/src/IdException.php
index 544f6c5..0439c10 100644
--- a/src/IdException.php
+++ b/src/IdException.php
@@ -9,10 +9,10 @@ class IdException extends \RuntimeException
     /**
      * @param string $id
      * @param string $message
-     * @param \Exception $previous
+     * @param \Throwable|null $previous
      * @param int $code
      */
-    public function __construct($id = '', $message = '', \Exception $previous = null, $code = 0)
+    public function __construct($id = '', $message = '', ?\Throwable $previous = null, $code = 0)
     {
         $this->id = $id;
 
diff --git a/src/InternalServerErrorApiException.php b/src/InternalServerErrorApiException.php
index c4dc77b..0fd9dbf 100644
--- a/src/InternalServerErrorApiException.php
+++ b/src/InternalServerErrorApiException.php
@@ -2,7 +2,6 @@
 
 namespace Lanin\Laravel\ApiExceptions;
 
-use Exception;
 use Lanin\Laravel\ApiExceptions\Contracts\ShowsPrevious;
 use Lanin\Laravel\ApiExceptions\Contracts\ShowsTrace;
 
@@ -10,9 +9,9 @@ class InternalServerErrorApiException extends ApiException implements ShowsTrace
 {
     /**
      * @param string $message
-     * @param Exception $previous
+     * @param \Throwable|null $previous
      */
-    public function __construct($message = '', Exception $previous = null)
+    public function __construct($message = '', ?\Throwable $previous = null)
     {
         if (empty($message)) {
             $message = 'The server encountered an internal error or misconfiguration and was unable to complete your request.';
diff --git a/src/MethodNotAllowedApiException.php b/src/MethodNotAllowedApiException.php
index 6f154fe..ff81a12 100644
--- a/src/MethodNotAllowedApiException.php
+++ b/src/MethodNotAllowedApiException.php
@@ -2,16 +2,15 @@
 
 namespace Lanin\Laravel\ApiExceptions;
 
-use Exception;
 use Lanin\Laravel\ApiExceptions\Contracts\DontReport;
 
 class MethodNotAllowedApiException extends ApiException implements DontReport
 {
     /**
      * @param string $message
-     * @param Exception $previous
+     * @param \Throwable|null $previous
      */
-    public function __construct($message = '', Exception $previous = null)
+    public function __construct($message = '', ?\Throwable $previous = null)
     {
         if (empty($message)) {
             $message = 'A request was made of a resource using a request method not supported by that resource.';
diff --git a/src/NotFoundApiException.php b/src/NotFoundApiException.php
index c83ae21..16eac1a 100644
--- a/src/NotFoundApiException.php
+++ b/src/NotFoundApiException.php
@@ -2,16 +2,15 @@
 
 namespace Lanin\Laravel\ApiExceptions;
 
-use Exception;
 use Lanin\Laravel\ApiExceptions\Contracts\DontReport;
 
 class NotFoundApiException extends ApiException implements DontReport
 {
     /**
      * @param string $message
-     * @param Exception $previous
+     * @param \Throwable|null $previous
      */
-    public function __construct($message = '', Exception $previous = null)
+    public function __construct($message = '', ?\Throwable $previous = null)
     {
         if (empty($message)) {
             $message = 'Requested object not found.';
diff --git a/src/TooManyRequestsApiException.php b/src/TooManyRequestsApiException.php
index f1ae4f3..4c59eb3 100644
--- a/src/TooManyRequestsApiException.php
+++ b/src/TooManyRequestsApiException.php
@@ -2,7 +2,6 @@
 
 namespace Lanin\Laravel\ApiExceptions;
 
-use Exception;
 use Lanin\Laravel\ApiExceptions\Contracts\DontReport;
 
 class TooManyRequestsApiException extends ApiException implements DontReport
@@ -16,9 +15,9 @@ class TooManyRequestsApiException extends ApiException implements DontReport
      * @param int|null $retryAfter
      * @param array $headers
      * @param string $message
-     * @param Exception $previous
+     * @param \Throwable|null $previous
      */
-    public function __construct($retryAfter = null, $headers = [],  $message = '', Exception $previous = null)
+    public function __construct($retryAfter = null, $headers = [],  $message = '', ?\Throwable $previous = null)
     {
         $this->retryAfter = $retryAfter;
 
diff --git a/src/UnauthorizedApiException.php b/src/UnauthorizedApiException.php
index 744997a..1b2daa6 100644
--- a/src/UnauthorizedApiException.php
+++ b/src/UnauthorizedApiException.php
@@ -2,16 +2,15 @@
 
 namespace Lanin\Laravel\ApiExceptions;
 
-use Exception;
 use Lanin\Laravel\ApiExceptions\Contracts\DontReport;
 
 class UnauthorizedApiException extends ApiException implements DontReport
 {
     /**
      * @param string $message
-     * @param Exception $previous
+     * @param \Throwable|null $previous
      */
-    public function __construct($message = '', Exception $previous = null)
+    public function __construct($message = '', ?\Throwable $previous = null)
     {
         if (empty($message)) {
             $message = 'Sent credentials are invalid.';
diff --git a/src/ValidationFailedApiException.php b/src/ValidationFailedApiException.php
index 96b9634..3384330 100644
--- a/src/ValidationFailedApiException.php
+++ b/src/ValidationFailedApiException.php
@@ -2,7 +2,6 @@
 
 namespace Lanin\Laravel\ApiExceptions;
 
-use Exception;
 use Lanin\Laravel\ApiExceptions\Contracts\DontReport;
 
 class ValidationFailedApiException extends ApiException implements DontReport
@@ -17,9 +16,9 @@ class ValidationFailedApiException extends ApiException implements DontReport
      *
      * @param array $errors
      * @param string $message
-     * @param Exception $previous
+     * @param \Throwable|null $previous
      */
-    public function __construct(array $errors, $message = '', Exception $previous = null)
+    public function __construct(array $errors, $message = '', ?\Throwable $previous = null)
     {
         $this->errors = $errors;