Add deprecation notice

zircote · Sep 22, 2024 · 7ddd018 · 7ddd018
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diff --git a/README.md b/README.md
@@ -9,6 +9,8 @@ Generate interactive [OpenAPI](https://www.openapis.org) documentation for your
 
 See the [documentation website](https://zircote.github.io/swagger-php/guide/attributes.html) for supported attributes and annotations.
 
+Annotations, and support for PHP versions lower than 8.1 are deprecated and will be removed in a future release of swagger-php.
+
 ## Features
 
 - Compatible with the OpenAPI **3.0** and **3.1** specification.