diff --git a/.travis.yml b/.travis.yml
index 7c3c68762..77db0059b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -51,6 +51,10 @@ matrix:
       sudo: required
       services: docker
       env: SYMFONY_VERSION=4.3.* RDKAFKA_TESTS=true PREPARE_CONTAINER=true
+    - php: 8.0
+      sudo: required
+      services: docker
+      env: SYMFONY_VERSION=5.0.* FUNCTIONAL_TESTS=true PREPARE_CONTAINER=true
   allow_failures:
     - env: SYMFONY_VERSION=4.3.* RDKAFKA_TESTS=true PREPARE_CONTAINER=true
 
diff --git a/composer.json b/composer.json
index 21cf655c1..cc51cbb5c 100644
--- a/composer.json
+++ b/composer.json
@@ -41,7 +41,7 @@
     "datadog/php-datadogstatsd": "^1.3"
   },
   "require-dev": {
-    "phpunit/phpunit": "^7.5",
+    "phpunit/phpunit": "^7.5|^8.5|^9.3",
     "phpstan/phpstan": "^0.12",
     "queue-interop/queue-spec": "^0.6",
     "symfony/browser-kit": "^3.4|^4",