diff --git a/notes.md b/notes.md
index 9975459..2758ff0 100644
--- a/notes.md
+++ b/notes.md
@@ -122,3 +122,4 @@
 2018-01-11T06:44:00 - Minor doc updates: linking to article on quantization (stable-baselines3)
 2018-01-11T00:28:00 - Refactor for clarity, might break a few tests though (stable-baselines3)
 2018-02-08T21:19:00 - Late-night bugfix on financial RL environment (stable-baselines3)
+2018-03-29T08:45:00 - Experimenting with FPGA constraints (source: Trimberger 'Three Ages of FPGAs') (stable-baselines3)