diff --git a/src/ZendRbac.php b/src/ZendRbac.php
index cca24c6..848b861 100644
--- a/src/ZendRbac.php
+++ b/src/ZendRbac.php
@@ -16,6 +16,8 @@
 use Zend\Permissions\Rbac\AssertionInterface;
 use Zend\Permissions\Rbac\Rbac;
 
+use function sprintf;
+
 class ZendRbac implements AuthorizationInterface
 {
     /**
diff --git a/src/ZendRbacFactory.php b/src/ZendRbacFactory.php
index a14aa39..e5c762c 100644
--- a/src/ZendRbacFactory.php
+++ b/src/ZendRbacFactory.php
@@ -15,6 +15,8 @@
 use Zend\Permissions\Rbac\Exception\ExceptionInterface as RbacExceptionInterface;
 use Zend\Permissions\Rbac\Rbac;
 
+use function sprintf;
+
 class ZendRbacFactory
 {
     /**
diff --git a/test/ConfigProviderTest.php b/test/ConfigProviderTest.php
index 021387c..b648fbd 100644
--- a/test/ConfigProviderTest.php
+++ b/test/ConfigProviderTest.php
@@ -14,6 +14,11 @@
 use Zend\Expressive\Authorization\Rbac\ZendRbac;
 use Zend\ServiceManager\ServiceManager;
 
+use function array_merge_recursive;
+use function file_get_contents;
+use function json_decode;
+use function sprintf;
+
 class ConfigProviderTest extends TestCase
 {
     /** @var ConfigProvider */
diff --git a/test/ZendRbacFactoryTest.php b/test/ZendRbacFactoryTest.php
index be040a7..36b4b70 100644
--- a/test/ZendRbacFactoryTest.php
+++ b/test/ZendRbacFactoryTest.php
@@ -14,8 +14,8 @@
 use Psr\Container\ContainerInterface;
 use Zend\Expressive\Authorization\Exception;
 use Zend\Expressive\Authorization\Rbac\ZendRbac;
-use Zend\Expressive\Authorization\Rbac\ZendRbacFactory;
 use Zend\Expressive\Authorization\Rbac\ZendRbacAssertionInterface;
+use Zend\Expressive\Authorization\Rbac\ZendRbacFactory;
 
 class ZendRbacFactoryTest extends TestCase
 {