diff --git a/CHANGELOG.md b/CHANGELOG.md
index c5794f842..f7d991348 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 # 1.15.0
 
   * added `preg_last_error_msg()` to the PHP 8 polyfill
+  * added interface `Stringable` to the PHP 8 polyfill
 
 # 1.14.0
 
diff --git a/src/Php80/README.md b/src/Php80/README.md
index 6d89cbe6e..c52acfbb8 100644
--- a/src/Php80/README.md
+++ b/src/Php80/README.md
@@ -1,8 +1,9 @@
 Symfony Polyfill / Php80
 ========================
 
-This component provides functions added to PHP 8.0 core:
+This component provides features added to PHP 8.0 core:
 
+- `Stringable` interface
 - [`fdiv`](https://php.net/fdiv)
 - `ValueError` class
 - `FILTER_VALIDATE_BOOL` constant
diff --git a/src/Php80/Resources/stubs/Stringable.php b/src/Php80/Resources/stubs/Stringable.php
new file mode 100644
index 000000000..ad0029a3d
--- /dev/null
+++ b/src/Php80/Resources/stubs/Stringable.php
@@ -0,0 +1,9 @@
+<?php
+
+interface Stringable
+{
+    /**
+     * @return string
+     */
+    public function __toString();
+}