diff --git a/composer.json b/composer.json
index 96eb960ce594bfc6ea90c780fafd04230a691eeb..14227414314f9a9a25cc05b31b9ae0b7003dedfc 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,7 @@
     "ext-json": "*",
     "beberlei/assert": "^3.2",
     "friendsofphp/php-cs-fixer": "^2.13",
-    "symfony/cache": "^5.0"
+    "symfony/cache": "^4.0"
   },
   "require-dev": {
     "mikey179/vfsstream": "^1.6",