diff --git a/src/AmznSPAHttp.php b/src/AmznSPAHttp.php
index 898c27a..e69aac9 100644
--- a/src/AmznSPAHttp.php
+++ b/src/AmznSPAHttp.php
@@ -288,9 +288,7 @@ private function refreshRdtToken(string $url, string $method)
     private function setupHttp(PendingRequest $http, bool $grantless = false, string $url = '', string $method = ''): void
     {
         if ($proxy = $this->config->getProxy()) {
-            $this->http = $http->withHeaders([
-                'Authorization' => "Bearer {$proxy->auth_token}",
-            ]);
+            $this->http = $http->withHeaders($proxy->headers);
         } else {
             $this->http = $http->withHeaders([
                 'x-amz-access-token' => $this->getToken($grantless, $url, $method),
diff --git a/src/Data/Proxy.php b/src/Data/Proxy.php
index 123fa83..f244dd7 100644
--- a/src/Data/Proxy.php
+++ b/src/Data/Proxy.php
@@ -6,7 +6,7 @@ class Proxy
 {
     public function __construct(
         public readonly string $url,
-        public readonly string $auth_token,
+        public readonly array $headers,
     ) {
     }
 }
diff --git a/src/Resources/ResourceGetter.php b/src/Resources/ResourceGetter.php
index 58c87ea..40b3d57 100644
--- a/src/Resources/ResourceGetter.php
+++ b/src/Resources/ResourceGetter.php
@@ -148,9 +148,11 @@ public function getListingsItems(): ListingsItemsResource
 
     private function constructResource(string $class, ?string $grantless_resource = null): ResourceContract
     {
+        $url = $this->config->getProxy() ? $this->config->getProxy()->url : $this->config->getMarketplace()->getBaseUrl();
+
         return new $class(
             $this->validateAndSetupHttpForStandardResource($grantless_resource),
-            $this->config->getMarketplace()->getBaseUrl(),
+            $url,
         );
     }
 
diff --git a/tests/Setup/SetupAmznSPAConfig.php b/tests/Setup/SetupAmznSPAConfig.php
index 667900a..7155d9a 100644
--- a/tests/Setup/SetupAmznSPAConfig.php
+++ b/tests/Setup/SetupAmznSPAConfig.php
@@ -6,6 +6,7 @@
 use Illuminate\Support\Str;
 use Jasara\AmznSPA\AmznSPAConfig;
 use Jasara\AmznSPA\Constants\MarketplacesList;
+use Jasara\AmznSPA\Data\Proxy;
 
 trait SetupAmznSPAConfig
 {
@@ -31,6 +32,32 @@ public function setupMinimalConfig(string $marketplace_id = null, Factory $http
         return $config;
     }
 
+    public function setupMinimalProxyConfig(
+        Proxy $proxy,
+        string $marketplace_id = null,
+        Factory $http = null,
+    ): AmznSPAConfig {
+        $config = new AmznSPAConfig(
+            marketplace_id: $marketplace_id ?: MarketplacesList::allIdentifiers()[rand(0, 15)],
+            application_id: Str::random(),
+            redirect_url: Str::random() . '.com',
+            lwa_refresh_token: Str::random(),
+            lwa_access_token: Str::random(),
+            grantless_access_token: Str::random(),
+            aws_access_key: Str::random(),
+            aws_secret_key: Str::random(),
+            lwa_client_id: Str::random(),
+            lwa_client_secret: Str::random(),
+            proxy: $proxy,
+        );
+
+        if ($http) {
+            $config->setHttp($http);
+        }
+
+        return $config;
+    }
+
     public function setupLiveConfig(): AmznSPAConfig
     {
         $config = new AmznSPAConfig(
diff --git a/tests/Unit/AmznSPAConfigTest.php b/tests/Unit/AmznSPAConfigTest.php
index 6f8f60e..51becfa 100644
--- a/tests/Unit/AmznSPAConfigTest.php
+++ b/tests/Unit/AmznSPAConfigTest.php
@@ -45,9 +45,13 @@ public function testGetNewConfig()
         $grantless_access_token_expires_at = CarbonImmutable::now()->addSeconds(rand(100, 500));
         $restricted_data_token = Str::random();
         $restricted_data_token_expires_at = CarbonImmutable::now()->addSeconds(rand(100, 500));
+
+        $proxy_auth_token = Str::random();
         $proxy = new Proxy(
             url: Str::random(),
-            auth_token: Str::random(),
+            headers: [
+                'Authorization' => "Bearer {$proxy_auth_token}",
+            ],
         );
 
         $config = new AmznSPAConfig(
@@ -99,7 +103,7 @@ public function testGetNewConfig()
         $this->assertTrue($config->shouldGetRdtTokens());
 
         $this->assertEquals($proxy->url, $config->getProxy()->url);
-        $this->assertEquals($proxy->auth_token, $config->getProxy()->auth_token);
+        $this->assertEquals($proxy->headers, $config->getProxy()->headers);
     }
 
     public function testSetters()
diff --git a/tests/Unit/AmznSPAHttpTest.php b/tests/Unit/AmznSPAHttpTest.php
index b92508e..3a2388a 100644
--- a/tests/Unit/AmznSPAHttpTest.php
+++ b/tests/Unit/AmznSPAHttpTest.php
@@ -431,6 +431,34 @@ function (Request $request) {
         $http->assertSentInOrder($request_validation);
     }
 
+    public function testSetProxyHeaders()
+    {
+        [$config, $http] = $this->setupConfigWithFakeHttp(['tokens/create-restricted-data-token', 'orders/get-orders']);
+
+        $amzn = new AmznSPA($config);
+        $amzn = $amzn->usingMarketplace('ATVPDKIKX0DER');
+        $amzn->orders->getOrders(
+            marketplace_ids: ['ATVPDKIKX0DER'],
+        );
+
+        $request_validation = [
+            function (Request $request) {
+                $this->assertEquals('POST', $request->method());
+                $this->assertEquals('https://sellingpartnerapi-na.amazon.com/tokens/2021-03-01/restrictedDataToken', $request->url());
+
+                return true;
+            },
+            function (Request $request) {
+                $this->assertEquals('GET', $request->method());
+                $this->assertEquals('https://sellingpartnerapi-na.amazon.com/orders/v0/orders?MarketplaceIds=ATVPDKIKX0DER', urldecode($request->url()));
+
+                return true;
+            },
+        ];
+
+        $http->assertSentInOrder($request_validation);
+    }
+
     public function testInvalidPartyId()
     {
         $this->expectException(AuthenticationException::class);
@@ -484,7 +512,7 @@ public function testSetupHttpProxy()
             application_id: Str::random(),
             proxy: new Proxy(
                 url: 'https://www.amazon.com',
-                auth_token: Str::random(),
+                headers: [],
             )
         );
 
diff --git a/tests/Unit/Data/ProxyTest.php b/tests/Unit/Data/ProxyTest.php
index cb7178d..d302edd 100644
--- a/tests/Unit/Data/ProxyTest.php
+++ b/tests/Unit/Data/ProxyTest.php
@@ -12,12 +12,15 @@ class ProxyTest extends UnitTestCase
 {
     public function testSetupTokens()
     {
+        $proxy_auth_token = Str::random();
         $proxy = new Proxy(
             url: $proxy_url = Str::random(),
-            auth_token: $proxy_auth_token = Str::random(),
+            headers: [
+                'Authorization' => "Bearer {$proxy_auth_token}",
+            ],
         );
 
         $this->assertEquals($proxy_url, $proxy->url);
-        $this->assertEquals($proxy_auth_token, $proxy->auth_token);
+        $this->assertEquals("Bearer {$proxy_auth_token}", $proxy->headers['Authorization']);
     }
 }