diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 4e7bd34..86ba26a 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -10,13 +10,12 @@ jobs:
       fail-fast: true
       matrix:
         os: [ubuntu-20.04]
-        php: [7.2, 7.3, 7.4]
-        # TYPO3 8.7 is not compatible with composer 2
-        typo3: ['^9.5', '^10.4']
+        php: [7.4]
+        typo3: ['^10.4', '^11.5']
         include:
           - os: ubuntu-20.04
-            php: 7.4
-            typo3: '^11.3'
+            php: 8.0
+            typo3: '^11.5'
 
     name: P${{ matrix.php }} - T${{ matrix.typo3 }}
 
diff --git a/README.md b/README.md
index 3a548c2..fecda92 100644
--- a/README.md
+++ b/README.md
@@ -3,10 +3,8 @@
 [![Latest Stable Version](https://poser.pugx.org/simonschaufi/typo3-phone/v/stable)](https://packagist.org/packages/simonschaufi/typo3-phone)
 [![Total Downloads](https://poser.pugx.org/simonschaufi/typo3-phone/downloads)](https://packagist.org/packages/simonschaufi/typo3-phone)
 [![License](https://poser.pugx.org/simonschaufi/typo3-phone/license)](https://packagist.org/packages/simonschaufi/typo3-phone)
-[![TYPO3](https://img.shields.io/badge/TYPO3-8.7-orange.svg)](https://get.typo3.org/version/8)
-[![TYPO3](https://img.shields.io/badge/TYPO3-9.5-orange.svg)](https://get.typo3.org/version/9)
-[![TYPO3](https://img.shields.io/badge/TYPO3-10.4-orange.svg)](https://get.typo3.org/version/10)
-[![TYPO3](https://img.shields.io/badge/TYPO3-11.0-orange.svg)](https://get.typo3.org/version/11)
+[![TYPO3](https://img.shields.io/badge/TYPO3-10-orange.svg)](https://get.typo3.org/version/10)
+[![TYPO3](https://img.shields.io/badge/TYPO3-11-orange.svg)](https://get.typo3.org/version/11)
 
 Adds phone number functionality to TYPO3 based on the [PHP port](https://github.com/giggsey/libphonenumber-for-php) of [Google's libphonenumber API](https://github.com/googlei18n/libphonenumber) by [giggsey](https://github.com/giggsey).
 
diff --git a/composer.json b/composer.json
index 37da6ff..d9a70fc 100644
--- a/composer.json
+++ b/composer.json
@@ -16,13 +16,13 @@
         }
     ],
     "require": {
-        "php": "^7.2",
+        "php": "^7.4 || ^8.0",
         "ext-json": "*",
         "giggsey/libphonenumber-for-php": "^7.0 || ^8.0",
-        "league/iso3166": "^2.0",
+        "league/iso3166": "^2.0 || ^4.0",
         "simonschaufi/typo3-support": "*",
         "symfony/polyfill-php80": "^1.25",
-        "typo3/cms-core": "^8.7 || ^9.5 || ^10.4 || ^11.0"
+        "typo3/cms-core": "^10.4 || ^11.0"
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^3.7",