diff --git a/2026-04-06.md b/2026-04-06.md
index 7b4d68576..c4b2cc387 100644
--- a/2026-04-06.md
+++ b/2026-04-06.md
@@ -1 +1,2 @@
 - [[Stapelberg]] told me about [[MQTT]], classic pubsub that works (tm)! Nice. 
+- [[Jonas]] told me about [[Lissajous curves]]!