diff --git a/Slim/Routing/RouteCollectorProxy.php b/Slim/Routing/RouteCollectorProxy.php
index d4ddb1d1d..a5cdd4e50 100644
--- a/Slim/Routing/RouteCollectorProxy.php
+++ b/Slim/Routing/RouteCollectorProxy.php
@@ -9,7 +9,6 @@
 
 namespace Slim\Routing;
 
-use Closure;
 use Psr\Container\ContainerInterface;
 use Psr\Http\Message\ResponseFactoryInterface;
 use Slim\Interfaces\CallableResolverInterface;
diff --git a/tests/CallableResolverTest.php b/tests/CallableResolverTest.php
index 7b1a114a6..0feec0893 100644
--- a/tests/CallableResolverTest.php
+++ b/tests/CallableResolverTest.php
@@ -13,7 +13,6 @@
 use Prophecy\Prophecy\ObjectProphecy;
 use Psr\Container\ContainerInterface;
 use Psr\Http\Server\RequestHandlerInterface;
-use RuntimeException;
 use Slim\CallableResolver;
 use Slim\Tests\Mocks\CallableTest;
 use Slim\Tests\Mocks\InvokableTest;
diff --git a/tests/Factory/AppFactoryTest.php b/tests/Factory/AppFactoryTest.php
index 29211e3f7..383ed7e05 100644
--- a/tests/Factory/AppFactoryTest.php
+++ b/tests/Factory/AppFactoryTest.php
@@ -16,7 +16,6 @@
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\StreamFactoryInterface;
 use ReflectionProperty;
-use RuntimeException;
 use Slim\Factory\AppFactory;
 use Slim\Factory\Psr17\GuzzlePsr17Factory;
 use Slim\Factory\Psr17\NyholmPsr17Factory;
diff --git a/tests/Factory/Psr17/Psr17FactoryTest.php b/tests/Factory/Psr17/Psr17FactoryTest.php
index 036f1e077..06edb959e 100644
--- a/tests/Factory/Psr17/Psr17FactoryTest.php
+++ b/tests/Factory/Psr17/Psr17FactoryTest.php
@@ -9,7 +9,6 @@
 
 namespace Slim\Tests\Factory\Psr17;
 
-use RuntimeException;
 use Slim\Tests\Mocks\MockPsr17Factory;
 use Slim\Tests\TestCase;
 
diff --git a/tests/Factory/Psr17/SlimHttpServerRequestCreatorTest.php b/tests/Factory/Psr17/SlimHttpServerRequestCreatorTest.php
index f2e57037a..47a16cb67 100644
--- a/tests/Factory/Psr17/SlimHttpServerRequestCreatorTest.php
+++ b/tests/Factory/Psr17/SlimHttpServerRequestCreatorTest.php
@@ -11,7 +11,6 @@
 
 use Psr\Http\Message\ServerRequestInterface;
 use ReflectionProperty;
-use RuntimeException;
 use Slim\Factory\Psr17\SlimHttpServerRequestCreator;
 use Slim\Http\ServerRequest;
 use Slim\Interfaces\ServerRequestCreatorInterface;
diff --git a/tests/Factory/ServerRequestCreatorFactoryTest.php b/tests/Factory/ServerRequestCreatorFactoryTest.php
index bd510d3e1..dacd82eed 100644
--- a/tests/Factory/ServerRequestCreatorFactoryTest.php
+++ b/tests/Factory/ServerRequestCreatorFactoryTest.php
@@ -12,7 +12,6 @@
 use GuzzleHttp\Psr7\ServerRequest as GuzzleServerRequest;
 use Nyholm\Psr7\ServerRequest as NyholmServerRequest;
 use Psr\Http\Message\ServerRequestInterface;
-use RuntimeException;
 use Slim\Factory\Psr17\GuzzlePsr17Factory;
 use Slim\Factory\Psr17\NyholmPsr17Factory;
 use Slim\Factory\Psr17\Psr17FactoryProvider;
@@ -22,7 +21,6 @@
 use Slim\Factory\ServerRequestCreatorFactory;
 use Slim\Http\ServerRequest;
 use Slim\Interfaces\ServerRequestCreatorInterface;
-use Slim\Psr7\Factory\ServerRequestFactory;
 use Slim\Psr7\Request as SlimServerRequest;
 use Slim\Tests\TestCase;
 use Zend\Diactoros\ServerRequest as ZendServerRequest;
diff --git a/tests/Middleware/RoutingMiddlewareTest.php b/tests/Middleware/RoutingMiddlewareTest.php
index 97194d107..4fb117c5c 100644
--- a/tests/Middleware/RoutingMiddlewareTest.php
+++ b/tests/Middleware/RoutingMiddlewareTest.php
@@ -13,7 +13,6 @@
 use Prophecy\Argument;
 use Psr\Http\Message\ServerRequestInterface;
 use Psr\Http\Server\RequestHandlerInterface;
-use RuntimeException;
 use Slim\CallableResolver;
 use Slim\Exception\HttpMethodNotAllowedException;
 use Slim\Exception\HttpNotFoundException;
diff --git a/tests/Routing/RouteContextTest.php b/tests/Routing/RouteContextTest.php
index 81fb66cb7..16cb18c4c 100644
--- a/tests/Routing/RouteContextTest.php
+++ b/tests/Routing/RouteContextTest.php
@@ -10,7 +10,6 @@
 namespace Slim\Tests\Routing;
 
 use Psr\Http\Message\ServerRequestInterface;
-use RuntimeException;
 use Slim\Interfaces\RouteInterface;
 use Slim\Interfaces\RouteParserInterface;
 use Slim\Routing\RouteContext;
diff --git a/tests/Routing/RouteRunnerTest.php b/tests/Routing/RouteRunnerTest.php
index 7800620c9..2f0127e60 100644
--- a/tests/Routing/RouteRunnerTest.php
+++ b/tests/Routing/RouteRunnerTest.php
@@ -11,7 +11,6 @@
 
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\ServerRequestInterface;
-use Slim\CallableResolver;
 use Slim\MiddlewareDispatcher;
 use Slim\Routing\RouteCollector;
 use Slim\Routing\RouteParser;