diff --git a/build.xml b/build.xml
index 1de0a6d..251ded0 100644
--- a/build.xml
+++ b/build.xml
@@ -5,7 +5,7 @@
 	<!-- Target: check                                -->
 	<!-- ============================================ -->
 	<target name="check" depends="lint, phpcs, phpstan, tests">
-		<exec command="vendor/bin/phpunit tests" checkreturn="true" passthru="true"/>
+		<exec command="vendor/bin/paratest tests" checkreturn="true" passthru="true"/>
 	</target>
 	<!-- ============================================ -->
 	<!-- Target: fix                                -->
diff --git a/composer.json b/composer.json
index 29d07a6..099b500 100644
--- a/composer.json
+++ b/composer.json
@@ -16,6 +16,7 @@
 		"rakit/validation": "^1.1"
 	},
 	"require-dev": {
+		"brianium/paratest": "^5.0",
 		"ergebnis/composer-normalize": "^2.5",
 		"fzaninotto/faker": "^1.7",
 		"mockery/mockery": "^1.3",