diff --git a/c3stream.cs b/c3stream.cs
index 5a07b95..8db2eaf 100644
--- a/c3stream.cs
+++ b/c3stream.cs
@@ -22,7 +22,7 @@ public static class c3stream {
 	public static string DbPath    = Path.Combine(DataPath, DbFile);
 
 	public static readonly List<ConferenceObject> Conferences = new() {
-		new ConferenceObject("gpn21"),
+		new ConferenceObject("gpn21", true),
 		new ConferenceObject("trans-tech-tent", true),
 		new ConferenceObject("jev22", true),
 		new ConferenceObject("MCH2022"),