diff --git a/.github/workflows/unit-test.yml b/.github/workflows/unit-test.yml
index a3e9db70f1ba42..8517004e89b5e5 100644
--- a/.github/workflows/unit-test.yml
+++ b/.github/workflows/unit-test.yml
@@ -89,10 +89,6 @@ jobs:
                   ini-file: development
                   coverage: none
 
-            # Ensure that Composer installs the correct versions of packages.
-            - name: Override PHP version in composer.json
-              run: composer config platform.php ${{ matrix.php }}
-
             # The spatie/phpunit-watcher package is not compatible with PHP < 7.2.
             # It must be removed before running the tests.
             - name: Remove incompatible Composer packages
diff --git a/composer.json b/composer.json
index 3571377bd58bd7..f6e28be2e8fcf7 100644
--- a/composer.json
+++ b/composer.json
@@ -17,9 +17,6 @@
 	},
 	"config": {
 		"process-timeout": 0,
-		"platform": {
-			"php": "7.4"
-		},
 		"allow-plugins": {
 			"dealerdirect/phpcodesniffer-composer-installer": true,
 			"composer/installers": true
@@ -43,6 +40,7 @@
 		}
 	],
 	"require": {
+		"php": ">=7.0.0",
 		"composer/installers": "~1.0"
 	},
 	"scripts": {