diff --git a/.travis.yml b/.travis.yml
index 45b836d..d87c85d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -18,7 +18,7 @@ matrix:
         - php: 7.2
           env: COMPOSER_FLAGS="--prefer-stable --prefer-lowest" SYMFONY_DEPRECATIONS_HELPER="weak_vendors"
         - php: 7.4
-          env: COMPOSER_FLAGS="--prefer-stable --prefer-lowest" SYMFONY_DEPRECATIONS_HELPER="weak_vendors"
+          env: SYMFONY_PHPUNIT_VERSION=8 COMPOSER_FLAGS="--prefer-stable --prefer-lowest" SYMFONY_DEPRECATIONS_HELPER="weak_vendors"
 
         # Test the latest stable release
         - php: 7.4
diff --git a/composer.json b/composer.json
index de32a1e..e9936f9 100644
--- a/composer.json
+++ b/composer.json
@@ -34,9 +34,9 @@
         "coffreo/js-translation-extractor": "^0.1"
     },
     "require-dev": {
-        "symfony/phpunit-bridge": "^3.4 || ^4.0",
+        "symfony/phpunit-bridge": "^3.4.26 || ^4.1.12",
         "coffreo/php-cs-fixer-config": "^2.2",
-        "matthiasnoback/symfony-dependency-injection-test": "^4.2"
+        "matthiasnoback/symfony-dependency-injection-test": "^3.1 || ^4.2"
     },
     "autoload": {
         "psr-4": {