diff --git a/notes.md b/notes.md
index 0e668efc..d805450e 100644
--- a/notes.md
+++ b/notes.md
@@ -282,3 +282,4 @@
 2023-12-12T06:42:00 - Testing bigger LLM config, referencing 'Attention Is All You Need' (litex-boards)
 2023-12-12T01:06:00 - Refactor for clarity, might break a few tests though (litex-boards)
 2023-12-26T17:26:00 - Trying out boneh-franklin approach for IBE (ref. 2003 paper) (litex-boards)
+2024-01-26T19:31:00 - Experimenting with FPGA constraints (source: Trimberger 'Three Ages of FPGAs') (litex-boards)