diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 57dc0c3..bc3d0ac 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.33.0"
+  ".": "0.33.1"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 31a7125..8f69d98 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 0.33.1 (2026-08-18)
+
+Full Changelog: [v0.33.0...v0.33.1](https://github.com/moderation-api/sdk-php/compare/v0.33.0...v0.33.1)
+
+### Chores
+
+* **internal:** codegen related update ([d83f1db](https://github.com/moderation-api/sdk-php/commit/d83f1dbabc1fa405978638cfeb8715134d724ac0))
+
 ## 0.33.0 (2026-08-14)
 
 Full Changelog: [v0.32.0...v0.33.0](https://github.com/moderation-api/sdk-php/compare/v0.32.0...v0.33.0)
diff --git a/README.md b/README.md
index 4e9bbdd..3949d45 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ The REST API documentation can be found on [docs.moderationapi.com](https://docs
 <!-- x-release-please-start-version -->
 
 ```
-composer require "moderation-api/sdk-php 0.33.0"
+composer require "moderation-api/sdk-php 0.33.1"
 ```
 
 <!-- x-release-please-end -->
diff --git a/src/Core/BaseClient.php b/src/Core/BaseClient.php
index f138ada..04c1593 100644
--- a/src/Core/BaseClient.php
+++ b/src/Core/BaseClient.php
@@ -130,10 +130,7 @@ protected function buildRequest(
         $parsedPath = Util::parsePath($path);
 
         /** @var array<string,mixed> $mergedQuery */
-        $mergedQuery = array_merge_recursive(
-            $query,
-            $options->extraQueryParams ?? []
-        );
+        $mergedQuery = [...$query, ...($options->extraQueryParams ?? [])];
         $uri = Util::joinUri($this->baseUrl, path: $parsedPath, query: $mergedQuery)->__toString();
         $idempotencyHeaders = $this->idempotencyHeader && !array_key_exists($this->idempotencyHeader, array: $headers)
             ? [$this->idempotencyHeader => $this->generateIdempotencyKey()]
diff --git a/src/Core/Concerns/SdkModel.php b/src/Core/Concerns/SdkModel.php
index f4ad4f4..1e78b89 100644
--- a/src/Core/Concerns/SdkModel.php
+++ b/src/Core/Concerns/SdkModel.php
@@ -97,6 +97,26 @@ public function __get(string $key): mixed
         return null;
     }
 
+    /**
+     * @internal
+     *
+     * Like {@link __unserialize()}, but for raw API payloads, whose keys are
+     * API property names rather than PHP property names
+     *
+     * @param array<string, mixed> $data
+     */
+    public function unserializeFromApiPayload(array $data): void
+    {
+        foreach (self::$converter->properties as $name => $info) {
+            if ($name !== $info->apiName && array_key_exists($info->apiName, array: $data)) {
+                $data[$name] = $data[$info->apiName];
+                unset($data[$info->apiName]);
+            }
+        }
+
+        $this->__unserialize($data);
+    }
+
     /**
      * @internal
      *
diff --git a/src/Core/Util.php b/src/Core/Util.php
index dfacc12..6c47a9c 100644
--- a/src/Core/Util.php
+++ b/src/Core/Util.php
@@ -207,7 +207,7 @@ public static function joinUri(
         parse_str($base->getQuery(), $q1);
         parse_str($parsed['query'] ?? '', $q2);
 
-        $mergedQuery = array_merge_recursive($q1, $q2, $query);
+        $mergedQuery = [...$q1, ...$q2, ...$query];
 
         /** @var array<string,mixed> */
         $normalizedQuery = self::mapRecursive(
diff --git a/src/Version.php b/src/Version.php
index ef88dd0..03bf6a8 100644
--- a/src/Version.php
+++ b/src/Version.php
@@ -5,5 +5,5 @@
 namespace ModerationAPI;
 
 // x-release-please-start-version
-const VERSION = '0.33.0';
+const VERSION = '0.33.1';
 // x-release-please-end