diff --git a/2021-07-28.md b/2021-07-28.md
index 034c92eee..f95d96c47 100644
--- a/2021-07-28.md
+++ b/2021-07-28.md
@@ -6,4 +6,9 @@
 	- [[ethanshamilton]]
 - [[gyuri]]
 - [[boris mann]]
-- [[category theory]]
\ No newline at end of file
+- [[category theory]]
+- [[trees]]
+	- [[push]] [[agora bot]]
+		- needs to be able to dump [[threads]]
+	- [[thread helper]]
+	- [[treeverse]]
\ No newline at end of file