Refactor caching to remove dependency on the illuminate implementation

1 files changed, 1 insertions, 1 deletions

diff --git a/README.md b/README.md
index a24391fadf..adafb358ff 100644
--- a/README.md
+++ b/README.md
@@ -54,11 +54,11 @@ webtrees follows the [PHP Standards Recommendations](https://www.php-fig.org/psr
 * [PSR-1](https://www.php-fig.org/psr/psr-1) - Basic Coding Standard
 * [PSR-2](https://www.php-fig.org/psr/psr-2) - Coding Style Guide
 * [PSR-4](https://www.php-fig.org/psr/psr-4) - Autoloading Stardard
+* [PSR-6](https://www.php-fig.org/psr/psr-6) - Cache
 * [PSR-7](https://www.php-fig.org/psr/psr-7) - HTTP Message Interface
 * [PSR-11](https://www.php-fig.org/psr/psr-11) - Container Interface
 * [PSR-12](https://www.php-fig.org/psr/psr-12) - Extended Coding Style Guide
 * [PSR-15](https://www.php-fig.org/psr/psr-15) - HTTP Handlers
-* [PSR-16](https://www.php-fig.org/psr/psr-16) - Simple Cache
 * [PSR-17](https://www.php-fig.org/psr/psr-17) - HTTP Factories
 
 We do not currently use [PSR-3 (logging)](https://www.php-fig.org/psr/psr-3) - but we plan to do so in the future.