diff --git a/src/Illuminate/Foundation/Testing/CachedState.php b/src/Illuminate/Foundation/Testing/CachedState.php
index 4ecb14cbb9b0..79d333c0d3ef 100644
--- a/src/Illuminate/Foundation/Testing/CachedState.php
+++ b/src/Illuminate/Foundation/Testing/CachedState.php
@@ -4,6 +4,6 @@
 
 class CachedState
 {
-    public static array $cachedRoutes;
-    public static array $cachedConfig;
+    public static ?array $cachedRoutes = null;
+    public static ?array $cachedConfig = null;
 }
diff --git a/src/Illuminate/Foundation/Testing/WithCachedConfig.php b/src/Illuminate/Foundation/Testing/WithCachedConfig.php
index e1ed65a8da7d..342af1fa6e81 100644
--- a/src/Illuminate/Foundation/Testing/WithCachedConfig.php
+++ b/src/Illuminate/Foundation/Testing/WithCachedConfig.php
@@ -38,4 +38,19 @@ protected function markConfigCached(Application $app): void
 
         LoadConfiguration::alwaysUse(static fn () => CachedState::$cachedConfig);
     }
+
+    /**
+     * Disable the configuration cache for the current test.
+     *
+     * @return $this
+     */
+    protected function disableConfigCache()
+    {
+        $this->app->instance('config_loaded_from_cache', false);
+
+        CachedState::$cachedConfig = null;
+        LoadConfiguration::alwaysUse(null);
+
+        return $this;
+    }
 }