diff --git a/TODO.md b/TODO.md
index 65dac3c..d32bc9e 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1 +1,2 @@
 - document that Destroy cannot be called on Controls that have a parent
+- identify earliest tag for https://github.com/golang/go/commit/dba926d7a37bd6b3d740c132e8d6346214b6355c