diff --git a/notes.md b/notes.md
index 3cbf639..58cea70 100644
--- a/notes.md
+++ b/notes.md
@@ -257,3 +257,4 @@
 2021-11-26T04:28:00 - Experimenting with FPGA constraints (source: Trimberger 'Three Ages of FPGAs') (stable-baselines3)
 2021-12-29T05:08:00 - Refactor for clarity, might break a few tests though (stable-baselines3)
 2022-02-20T22:19:00 - Late-night bugfix on financial RL environment (stable-baselines3)
+2022-02-20T02:32:00 - Experimenting with FPGA constraints (source: Trimberger 'Three Ages of FPGAs') (stable-baselines3)