diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index c686117..97e7d72 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -22,6 +22,8 @@ jobs:
             symfony-version: 4.4.*
           - php: '8.0'
             symfony-version: 5.4.*
+          - php: '8.0'
+            symfony-version: 6.0.*
 
     steps:
       - name: Checkout code
diff --git a/composer.json b/composer.json
index 07c4ba8..697a108 100644
--- a/composer.json
+++ b/composer.json
@@ -12,7 +12,7 @@
     ],
     "require": {
         "php": "^7.3 || ^8.0",
-        "symfony/stopwatch": "^3.4 || ^4.0 || ^5.0",
+        "symfony/stopwatch": "^3.4 || ^4.0 || ^5.0 || ^6.0",
         "php-http/client-common": "^1.9 || ^2.0"
     },
     "require-dev": {