diff --git a/tracked_sessions.yaml b/tracked_sessions.yaml
index 3bfcf4a..ab77668 100644
--- a/tracked_sessions.yaml
+++ b/tracked_sessions.yaml
@@ -34,6 +34,8 @@ ephys:
         day: 3
     - //allen/programs/mindscope/workgroups/dynamicrouting/PilotEphys/Task 2 pilot/DRpilot_644864_20230202:
         day: 4
+        session_kwargs:
+            probe_letters_to_skip: DF # no dye tracks
     - //allen/programs/mindscope/workgroups/dynamicrouting/PilotEphys/Task 2 pilot/DRpilot_644866_20230207:
         day: 1
     - //allen/programs/mindscope/workgroups/dynamicrouting/PilotEphys/Task 2 pilot/DRpilot_644866_20230208: