diff --git a/tests/system/Cache/Handlers/MemcachedHandlerTest.php b/tests/system/Cache/Handlers/MemcachedHandlerTest.php
index bbb91bf6a8de..e6bba9432cf2 100644
--- a/tests/system/Cache/Handlers/MemcachedHandlerTest.php
+++ b/tests/system/Cache/Handlers/MemcachedHandlerTest.php
@@ -14,9 +14,9 @@
 namespace CodeIgniter\Cache\Handlers;
 
 use CodeIgniter\CLI\CLI;
+use CodeIgniter\Exceptions\BadMethodCallException;
 use CodeIgniter\I18n\Time;
 use Config\Cache;
-use Exception;
 
 /**
  * @group CacheLive
@@ -125,7 +125,7 @@ public function testDelete(): void
     public function testDeleteMatching(): void
     {
         // Not implemented for Memcached, should throw an exception
-        $this->expectException(Exception::class);
+        $this->expectException(BadMethodCallException::class);
 
         $this->handler->deleteMatching('key*');
     }
diff --git a/tests/system/Cache/ResponseCacheTest.php b/tests/system/Cache/ResponseCacheTest.php
index b973bff2c2d1..a5b26990f6d1 100644
--- a/tests/system/Cache/ResponseCacheTest.php
+++ b/tests/system/Cache/ResponseCacheTest.php
@@ -13,6 +13,7 @@
 
 namespace CodeIgniter\Cache;
 
+use CodeIgniter\Exceptions\RuntimeException;
 use CodeIgniter\HTTP\CLIRequest;
 use CodeIgniter\HTTP\IncomingRequest;
 use CodeIgniter\HTTP\Response;
@@ -23,7 +24,6 @@
 use Config\App as AppConfig;
 use Config\Cache as CacheConfig;
 use ErrorException;
-use Exception;
 
 /**
  * @backupGlobals enabled
@@ -245,7 +245,7 @@ public function testUnserializeError()
 
     public function testInvalidCacheError()
     {
-        $this->expectException(Exception::class);
+        $this->expectException(RuntimeException::class);
         $this->expectExceptionMessage('Error unserializing page cache');
 
         $cache       = mock(CacheFactory::class);
diff --git a/tests/system/Log/LoggerTest.php b/tests/system/Log/LoggerTest.php
index e76e60cbd4c3..c8a3ad1d2ec6 100644
--- a/tests/system/Log/LoggerTest.php
+++ b/tests/system/Log/LoggerTest.php
@@ -14,11 +14,11 @@
 namespace CodeIgniter\Log;
 
 use CodeIgniter\Exceptions\FrameworkException;
+use CodeIgniter\Exceptions\RuntimeException;
 use CodeIgniter\I18n\Time;
 use CodeIgniter\Log\Exceptions\LogException;
 use CodeIgniter\Test\CIUnitTestCase;
 use CodeIgniter\Test\Mock\MockLogger as LoggerConfig;
-use Exception;
 use Tests\Support\Log\Handlers\TestHandler;
 use TypeError;
 
@@ -241,8 +241,8 @@ public function testLogInterpolatesExceptions(): void
         $expected = 'ERROR - ' . Time::now()->format('Y-m-d') . ' --> [ERROR] These are not the droids you are looking for';
 
         try {
-            throw new Exception('These are not the droids you are looking for');
-        } catch (Exception $e) {
+            throw new RuntimeException('These are not the droids you are looking for');
+        } catch (RuntimeException $e) {
             $logger->log('error', '[ERROR] {exception}', ['exception' => $e]);
         }
 
diff --git a/tests/system/Test/ControllerTestTraitTest.php b/tests/system/Test/ControllerTestTraitTest.php
index fae14d2629a9..680a2a31a4b1 100644
--- a/tests/system/Test/ControllerTestTraitTest.php
+++ b/tests/system/Test/ControllerTestTraitTest.php
@@ -16,11 +16,12 @@
 use App\Controllers\Home;
 use App\Controllers\NeverHeardOfIt;
 use CodeIgniter\Controller;
+use CodeIgniter\Exceptions\InvalidArgumentException;
+use CodeIgniter\Exceptions\RuntimeException;
 use CodeIgniter\Log\Logger;
 use CodeIgniter\Test\Mock\MockLogger as LoggerConfig;
 use Config\App;
 use Config\Services;
-use Exception;
 use Tests\Support\Controllers\Newautorouting;
 use Tests\Support\Controllers\Popcorn;
 
@@ -41,7 +42,8 @@ final class ControllerTestTraitTest extends CIUnitTestCase
 
     public function testBadController(): void
     {
-        $this->expectException('InvalidArgumentException');
+        $this->expectException(InvalidArgumentException::class);
+
         $logger = new Logger(new LoggerConfig());
         $this->withURI('http://example.com')
             ->withLogger($logger)
@@ -51,7 +53,8 @@ public function testBadController(): void
 
     public function testBadControllerMethod(): void
     {
-        $this->expectException('InvalidArgumentException');
+        $this->expectException(InvalidArgumentException::class);
+
         $logger = new Logger(new LoggerConfig());
         $this->withURI('http://example.com')
             ->withLogger($logger)
@@ -252,12 +255,12 @@ public function testUsesRequestBody(): void
         $this->controller = new class () extends Controller {
             public function throwsBody(): void
             {
-                throw new Exception($this->request->getBody());
+                throw new RuntimeException($this->request->getBody());
             }
         };
         $this->controller->initController($this->request, $this->response, $this->logger);
 
-        $this->expectException(Exception::class);
+        $this->expectException(RuntimeException::class);
         $this->expectExceptionMessage('banana');
 
         $this->withBody('banana')->execute('throwsBody');