diff --git a/.travis.yml b/.travis.yml
index 4b4e47e..afc7625 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,6 +9,8 @@ env:
     - SYMFONY_VERSION=3.4.*
     - SYMFONY_VERSION=4.1.*
     - SYMFONY_VERSION=4.2.*
+    - SYMFONY_VERSION=4.3.*
+    - SYMFONY_VERSION=4.4.*
 
 cache:
     directories:
@@ -22,6 +24,7 @@ install:
     - composer require symfony/http-kernel:${SYMFONY_VERSION} --no-update --no-scripts --prefer-dist
     - composer require symfony/proxy-manager-bridge:${SYMFONY_VERSION} --no-update --no-scripts --prefer-dist
     - composer require --dev symfony/framework-bundle:${SYMFONY_VERSION} --no-update --no-scripts --prefer-dist
+    - composer require --dev symfony/process:${SYMFONY_VERSION} --no-update --no-scripts --prefer-dist
     - composer require --dev symfony/yaml:${SYMFONY_VERSION} --no-update --no-scripts --prefer-dist
     - composer update --prefer-dist
 
diff --git a/composer.json b/composer.json
index 48dd97c..576a1fc 100644
--- a/composer.json
+++ b/composer.json
@@ -26,8 +26,12 @@
         "phpstan/phpstan-shim": "^0.11",
         "sylius-labs/coding-standard": "^3.0",
         "symfony/framework-bundle": "^3.4|^4.1",
+        "symfony/process": "^3.4|^4.1",
         "symfony/yaml": "^3.4|^4.1"
     },
+    "conflict": {
+        "symfony/stopwatch": "^5.0"
+    },
     "suggest": {
         "behat/mink-browserkit-driver": "^1.3"
     },