diff --git a/src/Clients/Traits/CreateFinalizeTrait.php b/src/Clients/Traits/CreateFinalizeTrait.php
index 3182684..05d7057 100644
--- a/src/Clients/Traits/CreateFinalizeTrait.php
+++ b/src/Clients/Traits/CreateFinalizeTrait.php
@@ -8,7 +8,7 @@
 trait CreateFinalizeTrait
 {
     /**
-     * @param array[] $data
+     * @param mixed[] $data
      * @param bool $finalized
      * @return ResponseInterface
      * @throws LexOfficeApiException
diff --git a/src/Clients/Traits/CreateTrait.php b/src/Clients/Traits/CreateTrait.php
index 5a47e1c..db5d494 100644
--- a/src/Clients/Traits/CreateTrait.php
+++ b/src/Clients/Traits/CreateTrait.php
@@ -8,7 +8,7 @@
 trait CreateTrait
 {
     /**
-     * @param array[] $data
+     * @param mixed[] $data
      * @return ResponseInterface
      * @throws LexOfficeApiException
      */
diff --git a/src/Clients/Traits/UpdateTrait.php b/src/Clients/Traits/UpdateTrait.php
index f5eb889..44428d7 100644
--- a/src/Clients/Traits/UpdateTrait.php
+++ b/src/Clients/Traits/UpdateTrait.php
@@ -9,7 +9,7 @@ trait UpdateTrait
 {
     /**
      * @param string $id
-     * @param array[] $data
+     * @param mixed[] $data
      * @return ResponseInterface
      * @throws LexOfficeApiException
      */
diff --git a/src/Utils.php b/src/Utils.php
index 398aa89..2c8587d 100644
--- a/src/Utils.php
+++ b/src/Utils.php
@@ -11,7 +11,7 @@ class Utils
 {
     /**
      * @param string $resource
-     * @param array{size?: int, metadata?: array, mode?: bool, seekable?: bool} $options
+     * @param array{size?: int, metadata?: mixed[], mode?: bool, seekable?: bool} $options
      * @return Stream
      */
     public static function streamFor(string $resource = '', array $options = []): Stream
@@ -32,7 +32,7 @@ public static function streamFor(string $resource = '', array $options = []): St
     /**
      * @param mixed $value
      * @param int $options
-     * @param int $depth
+     * @param int<1, max> $depth
      * @return string
      */
     public static function jsonEncode($value, int $options = 0, int $depth = 512): string
@@ -49,7 +49,7 @@ public static function jsonEncode($value, int $options = 0, int $depth = 512): s
     /**
      * @param string $json
      * @param bool $assoc
-     * @param int $depth
+     * @param int<1, max> $depth
      * @param int $options
      * @return mixed
      */