diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index faefdbc..31885df 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -24,6 +24,7 @@ jobs:
           - "8.1"
           - "8.2"
           - "8.3"
+          - "8.4"
         dependencies:
           - "lowest"
           - "highest"
diff --git a/composer.json b/composer.json
index 65108b0..9b9ca50 100644
--- a/composer.json
+++ b/composer.json
@@ -26,8 +26,8 @@
         "amphp/http-client": "^5",
         "amphp/process": "^2",
         "mockery/mockery": "^1.5",
-        "phpunit/php-code-coverage": "^10",
-        "phpunit/phpunit": "^10.5",
+        "phpunit/php-code-coverage": "^10 || ^11",
+        "phpunit/phpunit": "^10.5 || ^11",
         "seec/phpunit-consecutive-params": "^1.1"
     },
     "minimum-stability": "stable",