diff --git a/t5/scripts/dump_task.py b/t5/scripts/dump_task.py
index b062d6f5..fed56f25 100644
--- a/t5/scripts/dump_task.py
+++ b/t5/scripts/dump_task.py
@@ -20,6 +20,10 @@
     --max_examples=100
 
 
+Note: this binary is outdated. The recommended alternative is to write a
+seqio_binaries() build rule with your tasks module as dependencies;
+and then run inspect_tasks: seqio/scripts/inspect_tasks_main.py
+
 """
 
 import importlib