diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 6a51da2..acc4908 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -13,12 +13,16 @@ jobs:
     strategy:
       matrix:
         include:
-          - php-version: '7.1'
+          - php-version: '7.2'
             composer-options: '--prefer-lowest --prefer-stable'
           - php-version: '7.2'
             composer-options: '--prefer-stable'
           - php-version: '7.3'
             composer-options: '--prefer-stable'
+          - php-version: '7.4'
+            composer-options: '--prefer-stable'
+          - php-version: '8.0'
+            composer-options: '--prefer-stable'
 
     steps:
       - name: 'Check out'
diff --git a/CHANGELOG.md b/CHANGELOG.md
index fb9bca5..761de2e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,8 +4,10 @@ CHANGELOG
 2.2.0
 -----
 
+* add support for PHP 8
+* added support for Symfony 5
 * dropped support for unmaintained Symfony versions
-* dropped support for PHP < 7.1
+* dropped support for PHP < 7.2
 
 2.1.0
 -----
diff --git a/composer.json b/composer.json
index 0ff8421..5989503 100644
--- a/composer.json
+++ b/composer.json
@@ -12,11 +12,11 @@
         }
     ],
     "require": {
-        "php": "^7.1",
+        "php": "^7.2 || ^8.0",
         "php-xapi/exception": "^0.2.0",
         "php-xapi/model": "^1.2 || ^2.1 || ^3.0",
         "php-xapi/serializer": "^2.1.1",
-        "symfony/serializer": "^3.4 || ^4.3"
+        "symfony/serializer": "^4.4 || ^5.2"
     },
     "require-dev": {
         "php-xapi/json-test-fixtures": "^2.0",