1 files changed, 1 insertions, 0 deletions
diff --git a/LibMatrix/Filters/SyncFilter.cs b/LibMatrix/Filters/SyncFilter.cs
index c907f6b..e281346 100644
--- a/LibMatrix/Filters/SyncFilter.cs
+++ b/LibMatrix/Filters/SyncFilter.cs
@@ -1,3 +1,4 @@
+using System.Collections.Generic;
 using System.Text.Json.Serialization;
 
 namespace LibMatrix.Filters;