diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3e6356b..5dc79c2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,16 +10,24 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php: [ '7.2', '7.3', '7.4', '8.0' ]
+        php: [ '8.0', '8.1']
         strategy: [ 'highest' ]
-        sf_version: ['']
+        sf_version: ['5.*', '6.*']
         include:
-            - php: 7.4
-              strategy: 'lowest'
-            - php: 7.3
+            - php: 7.2
               sf_version: '3.*'
             - php: 7.3
+              sf_version: '3.*'
+            - php: 7.4
               sf_version: '4.*'
+            - php: 7.4
+              sf_version: '5.*'
+            - php: 7.4
+              sf_version: '5.*'
+              strategy: 'lowest'
+            - php: 8.1
+              sf_version: '6.*'
+              strategy: 'lowest'
 
     steps:
       - name: Checkout code
diff --git a/composer.json b/composer.json
index 348f7f3..dd3160d 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,7 @@
         "symfony/translation": "^3.4 || ^4.2 || ^5.0 || ^6.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^8.4",
+        "phpunit/phpunit": ">=8.5.20",
         "symfony/framework-bundle": " ^3.4 || ^4.2 || ^5.0 || ^6.0"
     },
     "autoload": {