diff --git a/todo.txt b/todo.txt
index 4312520..45ad8d6 100644
--- a/todo.txt
+++ b/todo.txt
@@ -22,6 +22,7 @@
 
 --- Tech ---
 
+- grep peerscrawl.php and getinstinfo.php logs on the server after a run to check for php errors and warnings
 * VERY IMPORTANT: make a script to set Instances.LastOkCheckTS to the last ok check based on InstChecks (NULL if never)
 * getinstinfo.php, instances.php: use the same method that is used in peerscrawl.php to determine if an instance is dead
 - mustool.php: could clean InstChecks too now, since we dropped Instances.Dead and use Instances.LastOkCheckTS