diff --git a/notes.md b/notes.md
index 24c3d5e..175325d 100644
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+++ b/notes.md
@@ -111,3 +111,4 @@
 2017-10-23T04:59:00 - Trying out boneh-franklin approach for IBE (ref. 2003 paper) (stable-baselines3)
 2017-12-15T08:04:00 - Implementing approach from a new paper read last night (stable-baselines3)
 2017-12-15T18:52:00 - Minor doc updates: linking to article on quantization (stable-baselines3)
+2017-12-15T21:49:00 - Experimenting with FPGA constraints (source: Trimberger 'Three Ages of FPGAs') (stable-baselines3)