diff --git a/TODO b/TODO
index 4e08ca5..32aadbe 100644
--- a/TODO
+++ b/TODO
@@ -7,3 +7,5 @@ The following list is a collection of areas, where some work is needed
 * implement a way to convert keys to SSH format (separate tool?)
 * find a way to get ED25519 working
 * implement info command
+
+* add zlint support for linting certificates