diff --git a/src/Commands/AboutCommandGroup.cs b/src/Commands/AboutCommandGroup.cs
index 2c1e770..a12c070 100644
--- a/src/Commands/AboutCommandGroup.cs
+++ b/src/Commands/AboutCommandGroup.cs
@@ -88,7 +88,9 @@ public class AboutCommandGroup : CommandGroup
         {
             var guildMemberResult = await _guildApi.GetGuildMemberAsync(
                 guildId, dev.Id, ct);
-            var tag = guildMemberResult.IsSuccess ? $"<@{dev.Id}>" : $"@{dev.Username}";
+            var tag = guildMemberResult.IsSuccess
+                ? $"<@{dev.Id}>"
+                : MarkdownExtensions.Hyperlink($"@{dev.Username}", $"https://github.com/{dev.Username}");
 
             builder.AppendBulletPointLine($"{tag} — {$"AboutDeveloper@{dev.Username}".Localized()}");
         }
diff --git a/src/Extensions/MarkdownExtensions.cs b/src/Extensions/MarkdownExtensions.cs
index 7b7f780..95cd344 100644
--- a/src/Extensions/MarkdownExtensions.cs
+++ b/src/Extensions/MarkdownExtensions.cs
@@ -13,4 +13,17 @@ public static class MarkdownExtensions
     {
         return $"- {text}";
     }
+
+    /// <summary>
+    /// Formats a string to use Markdown Hyperlink formatting.
+    /// </summary>
+    /// <param name="text">The input text to format.</param>
+    /// <param name="url">The URL to use in formatting.</param>
+    /// <returns>
+    /// A markdown-formatted Hyperlink string.
+    /// </returns>
+    public static string Hyperlink(string text, string url)
+    {
+        return $"[{text}]({url})";
+    }
 }