diff --git a/update_depot_tools b/update_depot_tools
index 42d02a359..c2a4d5f93 100755
--- a/update_depot_tools
+++ b/update_depot_tools
@@ -94,3 +94,5 @@ then
     echo "Depot Tools has been updated to revision $AFTER_REVISION." 1>&2
   fi
 fi
+
+find . -iname "*.pyc" -delete