diff --git a/composer.json b/composer.json
index a814372..30a61e3 100644
--- a/composer.json
+++ b/composer.json
@@ -11,11 +11,12 @@
   "minimum-stability": "dev",
   "prefer-stable": true,
   "require": {
+    "php": "^7.3",
     "ezsystems/ezpublish-kernel": "^8.0@dev",
-    "symfony/http-kernel": "^4.2",
-    "symfony/config": "^4.2",
-    "symfony/dependency-injection": "^4.2",
-    "symfony/event-dispatcher": "^4.2"
+    "symfony/http-kernel": "^4.3",
+    "symfony/config": "^4.3",
+    "symfony/dependency-injection": "^4.3",
+    "symfony/event-dispatcher": "^4.3"
   },
   "autoload": {
     "psr-4": {