diff --git a/DiscordClient/DiscordUserClient.cs b/DiscordClient/DiscordUserClient.cs
index 2f592e2..454055e 100644
--- a/DiscordClient/DiscordUserClient.cs
+++ b/DiscordClient/DiscordUserClient.cs
@@ -21,10 +21,13 @@ public class DiscordUserClient
     public async Task<ChannelMessagesResponse[]?> GetChannelMessages(
         string channelId,
         int offset = 0,
+        string? authorId = null,
         int limit = 50
     )
     {
-        string url = $"https://discord.com/api/v9/channels/{channelId}/messages?limit={limit}&offset={offset}";
+        string authorQuery = authorId is not null ? $"&author_id={authorId}" : "";
+        string url =
+            $"https://discord.com/api/v9/channels/{channelId}/messages?limit={limit}&offset={offset}{authorQuery}";
         HttpResponseMessage response = await _httpClient.GetAsync(url);
         return await response.Content.ReadFromJsonAsync<ChannelMessagesResponse[]>();
     }