diff --git a/manifest.json b/manifest.json
index 818f352ea..567a409ac 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,6 +1,6 @@
 {
     "variables": {
-        "${LATEST}": "3.356.22"
+        "${LATEST}": "3.356.23"
     },
     "endpoints": "https://raw.githubusercontent.com/aws/aws-sdk-php/${LATEST}/src/data/endpoints.json",
     "services": {
diff --git a/src/Service/SsoOidc/CHANGELOG.md b/src/Service/SsoOidc/CHANGELOG.md
index a99b0fcba..289317b9d 100644
--- a/src/Service/SsoOidc/CHANGELOG.md
+++ b/src/Service/SsoOidc/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## NOT RELEASED
 
+### Added
+
+- AWS api-change: Rework regions configuration
+
 ## 1.1.1
 
 ### Changed
diff --git a/src/Service/SsoOidc/composer.json b/src/Service/SsoOidc/composer.json
index f2b505322..cd080899d 100644
--- a/src/Service/SsoOidc/composer.json
+++ b/src/Service/SsoOidc/composer.json
@@ -27,7 +27,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "1.1-dev"
+            "dev-master": "1.2-dev"
         }
     }
 }
diff --git a/src/Service/SsoOidc/src/SsoOidcClient.php b/src/Service/SsoOidc/src/SsoOidcClient.php
index f47676778..6ae97b392 100644
--- a/src/Service/SsoOidc/src/SsoOidcClient.php
+++ b/src/Service/SsoOidc/src/SsoOidcClient.php
@@ -6,7 +6,6 @@
 use AsyncAws\Core\AwsError\AwsErrorFactoryInterface;
 use AsyncAws\Core\AwsError\JsonRestAwsErrorFactory;
 use AsyncAws\Core\Configuration;
-use AsyncAws\Core\Exception\UnsupportedRegion;
 use AsyncAws\Core\RequestContext;
 use AsyncAws\SsoOidc\Exception\AccessDeniedException;
 use AsyncAws\SsoOidc\Exception\AuthorizationPendingException;
@@ -89,44 +88,6 @@ protected function getEndpointMetadata(?string $region): array
         }
 
         switch ($region) {
-            case 'af-south-1':
-            case 'ap-east-1':
-            case 'ap-northeast-1':
-            case 'ap-northeast-2':
-            case 'ap-northeast-3':
-            case 'ap-south-1':
-            case 'ap-south-2':
-            case 'ap-southeast-1':
-            case 'ap-southeast-2':
-            case 'ap-southeast-3':
-            case 'ap-southeast-4':
-            case 'ap-southeast-5':
-            case 'ca-central-1':
-            case 'ca-west-1':
-            case 'eu-central-1':
-            case 'eu-central-2':
-            case 'eu-north-1':
-            case 'eu-south-1':
-            case 'eu-south-2':
-            case 'eu-west-1':
-            case 'eu-west-2':
-            case 'eu-west-3':
-            case 'il-central-1':
-            case 'me-central-1':
-            case 'me-south-1':
-            case 'sa-east-1':
-            case 'us-east-1':
-            case 'us-east-2':
-            case 'us-gov-east-1':
-            case 'us-gov-west-1':
-            case 'us-west-1':
-            case 'us-west-2':
-                return [
-                    'endpoint' => "https://oidc.$region.amazonaws.com",
-                    'signRegion' => $region,
-                    'signService' => 'sso-oauth',
-                    'signVersions' => ['v4'],
-                ];
             case 'cn-north-1':
             case 'cn-northwest-1':
                 return [
@@ -137,6 +98,11 @@ protected function getEndpointMetadata(?string $region): array
                 ];
         }
 
-        throw new UnsupportedRegion(\sprintf('The region "%s" is not supported by "SsoOidc".', $region));
+        return [
+            'endpoint' => "https://oidc.$region.amazonaws.com",
+            'signRegion' => $region,
+            'signService' => 'sso-oauth',
+            'signVersions' => ['v4'],
+        ];
     }
 }