diff --git a/notes.md b/notes.md
index dda1446c3..a0fa187b9 100644
--- a/notes.md
+++ b/notes.md
@@ -204,3 +204,4 @@
 2021-12-22T23:03:00 - Refactor for clarity, might break a few tests though (transformers)
 2022-01-09T17:57:00 - Quick fix, referencing a known issue from the official repo (transformers)
 2022-01-09T17:07:00 - Quick fix, referencing a known issue from the official repo (transformers)
+2022-03-04T22:50:00 - Experimenting with FPGA constraints (source: Trimberger 'Three Ages of FPGAs') (transformers)