diff --git a/.github/workflows/php.yml b/.github/workflows/php.yml
index 8249447..56505cd 100644
--- a/.github/workflows/php.yml
+++ b/.github/workflows/php.yml
@@ -46,7 +46,7 @@ jobs:
         uses: shivammathur/setup-php@v2
         with:
           # Should be the higest supported version, so we can use the newest tools
-          php-version: '8.2'
+          php-version: '8.3'
           tools: composer, composer-require-checker, composer-unused, phpcs, psalm
           # optional performance gain for psalm: opcache
           extensions: ctype, date, dom, opcache, pcre, spl, xml
@@ -111,7 +111,7 @@ jobs:
         uses: shivammathur/setup-php@v2
         with:
           # Should be the lowest supported version
-          php-version: '8.0'
+          php-version: '8.1'
           extensions: ctype, date, dom, pcre, spl, xml
           tools: composer
           coverage: none
@@ -151,7 +151,7 @@ jobs:
       fail-fast: false
       matrix:
         operating-system: [ubuntu-latest]
-        php-versions: ['8.0', '8.1', '8.2']
+        php-versions: ['8.1', '8.2', '8.3']
 
     steps:
       - name: Setup PHP, with composer and extensions
@@ -191,15 +191,15 @@ jobs:
         run: composer install --no-progress --prefer-dist --optimize-autoloader
 
       - name: Run unit tests with coverage
-        if: ${{ matrix.php-versions == '8.2' }}
+        if: ${{ matrix.php-versions == '8.3' }}
         run: vendor/bin/phpunit
 
       - name: Run unit tests (no coverage)
-        if: ${{ matrix.php-versions != '8.2' }}
+        if: ${{ matrix.php-versions != '8.3' }}
         run: vendor/bin/phpunit --no-coverage
 
       - name: Save coverage data
-        if: ${{ matrix.php-versions == '8.2' }}
+        if: ${{ matrix.php-versions == '8.3' }}
         uses: actions/upload-artifact@v3
         with:
           name: coverage-data
@@ -213,7 +213,7 @@ jobs:
       fail-fast: true
       matrix:
         operating-system: [windows-latest]
-        php-versions: ['8.0', '8.1', '8.2']
+        php-versions: ['8.1', '8.2', '8.3']
 
     steps:
       - name: Setup PHP, with composer and extensions
diff --git a/composer.json b/composer.json
index d8e07fd..b27850d 100644
--- a/composer.json
+++ b/composer.json
@@ -9,14 +9,14 @@
         }
     ],
     "require": {
-        "php": "^8.0",
+        "php": "^8.1",
         "ext-dom": "*",
 
-        "simplesamlphp/assert": "^1.0.4",
-        "simplesamlphp/xml-common": "^1.12.0"
+        "simplesamlphp/assert": "^1.0",
+        "simplesamlphp/xml-common": "^1.12"
     },
     "require-dev": {
-        "simplesamlphp/simplesamlphp-test-framework": "^1.5.5"
+        "simplesamlphp/simplesamlphp-test-framework": "^1.5"
     },
     "autoload": {
         "psr-4": {