diff --git a/src/Mink/MinkParameters.php b/src/Mink/MinkParameters.php
index 695bfad..28ae204 100644
--- a/src/Mink/MinkParameters.php
+++ b/src/Mink/MinkParameters.php
@@ -27,6 +27,9 @@ public function offsetExists($offset): bool
         return array_key_exists($offset, $this->minkParameters);
     }
 
+    /**
+     * @return mixed
+     */
     #[ReturnTypeWillChange]
     public function offsetGet($offset)
     {