diff --git a/README.md b/README.md
index 1439d90..2284622 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ This client library is released under the [MIT license](LICENSE).
 
 ## Requirements
 
-This library is unit tested against PHP 7.3, 7.4 and 8.0!
+This library is unit tested against PHP 7.3, 7.4, 8.0 and 8.1!
 
 If you need to use an older version of PHP, you should instead install the 3.x version of this library (see below for details).
 
@@ -76,7 +76,7 @@ A set of working examples including multi-point calculations can be found in the
 
 This library is fully unit tested using [PHPUnit](https://phpunit.de/).
 
-I use GitHub Actions for continuous integration, which triggers tests for PHP 7.3, 7.4 and 8.0 everytime a commit is pushed.
+I use GitHub Actions for continuous integration, which triggers tests for PHP 7.3, 7.4, 8.0 and 8.1 everytime a commit is pushed.
 
 If you wish to run the tests yourself you should run the following: