diff --git a/src/Metric.php b/src/Metric.php
index 2468948..3614637 100644
--- a/src/Metric.php
+++ b/src/Metric.php
@@ -22,7 +22,7 @@ abstract class Metric {
   /**
    * The help message for the metric.
    *
-   * @var string
+   * @var string|\Stringable
    */
   protected $help;
 
@@ -40,10 +40,10 @@ abstract class Metric {
    *   The metric namespace.
    * @param string $name
    *   The metric name.
-   * @param string $help
+   * @param string|\Stringable $help
    *   The help message for the metric.
    */
-  public function __construct(string $namespace, string $name, string $help) {
+  public function __construct(string $namespace, string $name, string|\Stringable $help) {
     $fullName = $namespace . '_' . $name;
     $this->validateName($fullName);
     $this->name = $fullName;
@@ -71,10 +71,10 @@ public function getName(): string {
   /**
    * Gets the Help.
    *
-   * @return string
+   * @return string|\Stringable
    *   The Help.
    */
-  public function getHelp(): string {
+  public function getHelp(): string|\Stringable {
     return $this->help;
   }
 
diff --git a/src/Summary.php b/src/Summary.php
index 3d3e2c7..d417878 100644
--- a/src/Summary.php
+++ b/src/Summary.php
@@ -36,7 +36,7 @@ class Summary extends Metric {
   /**
    * Summary constructor.
    */
-  public function __construct(string $namespace, string $name, string $help, $label) {
+  public function __construct(string $namespace, string $name, string|\Stringable $help, $label) {
     parent::__construct($namespace, $name, $help);
     $this->sum = 0;
     $this->count = 0;