diff --git a/CHANGELOG.md b/CHANGELOG.md
index 84161f1..901674b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 All notable changes to `anthropic-sdk-php` will be documented in this file.
 
+## Added default metadata support. - 2024-01-24
+
+Claude is requiring user_id as part of the meta data.
+
 ## v.1.0 - 2023-10-01
 
 Version 1 release. Enjoy!
diff --git a/src/Requests/CreateCompletionRequest.php b/src/Requests/CreateCompletionRequest.php
index bd64bbf..025db2e 100644
--- a/src/Requests/CreateCompletionRequest.php
+++ b/src/Requests/CreateCompletionRequest.php
@@ -14,15 +14,15 @@ class CreateCompletionRequest extends Request implements HasBody
     protected Method $method = Method::POST;
 
     /**
-     * @param  string  $prompt The model that will complete your prompt.
-     * @param  string  $model The prompt that you want Claude to complete.
-     * @param  int  $max_tokens_to_sample The maximum number of tokens to generate before stopping.
-     * @param  array<string>  $stop_sequences Sequences that will cause the model to stop generating completion text.
-     * @param  int  $temperature Amount of randomness injected into the response.
-     * @param  float  $top_p Use nucleus sampling.
-     * @param  int  $top_k Only sample from the top K options for each subsequent token.
-     * @param  array  $metadata An object describing metadata about the request.
-     * @param  bool  $stream Whether to incrementally stream the response using server-sent events.
+     * @param  string  $prompt  The model that will complete your prompt.
+     * @param  string  $model  The prompt that you want Claude to complete.
+     * @param  int  $max_tokens_to_sample  The maximum number of tokens to generate before stopping.
+     * @param  array<string>  $stop_sequences  Sequences that will cause the model to stop generating completion text.
+     * @param  int  $temperature  Amount of randomness injected into the response.
+     * @param  float  $top_p  Use nucleus sampling.
+     * @param  int  $top_k  Only sample from the top K options for each subsequent token.
+     * @param  array  $metadata  An object describing metadata about the request.
+     * @param  bool  $stream  Whether to incrementally stream the response using server-sent events.
      */
     public function __construct(
         public readonly string $prompt = "\n\nHuman:Say Hi\n\nAssistant:",