diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 6991001f3..8a1fb06ed 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -115,7 +115,7 @@ sdk-generator/blob/master/example.php:
 Run the following command (make sure you have an updated docker version on your machine):
 
 ```bash
-docker run --rm -v $(pwd):/app -w /app php:8.1-cli php example.php
+docker run --rm -v $(pwd):/app -w /app php:8.3-cli php example.php
 ```
 
 >Note: You can just add the new language next to the other languages in the `example.php` file. You don't need to rewrite the file completely.
@@ -252,7 +252,7 @@ Also in `.travis.yml` add new env `SDK=[Language]` so that travis will run a tes
 
 Finally, you can run tests using:
 ```sh
-docker run --rm -v $(pwd):$(pwd):rw -w $(pwd) -v /var/run/docker.sock:/var/run/docker.sock  php:8.1-cli-alpine sh -c "apk add docker-cli && vendor/bin/phpunit"
+docker run --rm -v $(pwd):$(pwd):rw -w $(pwd) -v /var/run/docker.sock:/var/run/docker.sock  php:8.3-cli-alpine sh -c "apk add docker-cli && vendor/bin/phpunit"
 ```
 
 ## SDK Generator Interface
diff --git a/src/SDK/Language/Node.php b/src/SDK/Language/Node.php
index f7e819150..3c5449573 100644
--- a/src/SDK/Language/Node.php
+++ b/src/SDK/Language/Node.php
@@ -29,6 +29,19 @@ public function getTypeName(array $parameter, array $method = []): string
             case self::TYPE_NUMBER:
                 return 'number';
             case self::TYPE_ARRAY:
+                if (!empty($parameter['array']['x-anyOf'] ?? [])) {
+                    $unionTypes = [];
+                    foreach ($parameter['array']['x-anyOf'] as $refType) {
+                        if (isset($refType['$ref'])) {
+                            $refParts = explode('/', $refType['$ref']);
+                            $modelName = end($refParts);
+                            $unionTypes[] = 'Models.' . $this->toPascalCase($modelName);
+                        }
+                    }
+                    if (!empty($unionTypes)) {
+                        return '(' . implode(' | ', $unionTypes) . ')[]';
+                    }
+                }
                 if (!empty(($parameter['array'] ?? [])['type']) && !\is_array($parameter['array']['type'])) {
                     return $this->getTypeName($parameter['array']) . '[]';
                 }
diff --git a/src/SDK/Language/Web.php b/src/SDK/Language/Web.php
index 94b48343d..54731de93 100644
--- a/src/SDK/Language/Web.php
+++ b/src/SDK/Language/Web.php
@@ -194,6 +194,19 @@ public function getTypeName(array $parameter, array $method = []): string
             case self::TYPE_NUMBER:
                 return 'number';
             case self::TYPE_ARRAY:
+                if (!empty($parameter['array']['x-anyOf'] ?? [])) {
+                    $unionTypes = [];
+                    foreach ($parameter['array']['x-anyOf'] as $refType) {
+                        if (isset($refType['$ref'])) {
+                            $refParts = explode('/', $refType['$ref']);
+                            $modelName = end($refParts);
+                            $unionTypes[] = 'Models.' . $this->toPascalCase($modelName);
+                        }
+                    }
+                    if (!empty($unionTypes)) {
+                        return '(' . implode(' | ', $unionTypes) . ')[]';
+                    }
+                }
                 if (!empty(($parameter['array'] ?? [])['type']) && !\is_array($parameter['array']['type'])) {
                     return $this->getTypeName($parameter['array']) . '[]';
                 }