diff --git a/composer.json b/composer.json
index d882a97..77248a9 100644
--- a/composer.json
+++ b/composer.json
@@ -18,10 +18,10 @@
         "issues": "https://issues.apache.org/jira/browse/THRIFT"
     },
     "require": {
-        "php": "^5.5 || ^7.0 || ^8.0"
+        "php": "^7.1 || ^8.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^4.8 || ^5.7 || ^6.5 || ^7.5 || ^8.5 || ^9.3",
+        "phpunit/phpunit": "^7.5 || ^8.5 || ^9.5",
         "squizlabs/php_codesniffer": "3.*",
         "ext-json": "*",
         "ext-xml": "*"