diff --git a/notes.md b/notes.md
index f1b0b7cf7..da232a14d 100644
--- a/notes.md
+++ b/notes.md
@@ -217,3 +217,4 @@
 2022-05-22T17:44:00 - Trying out boneh-franklin approach for IBE (ref. 2003 paper) (cryptography)
 2022-05-22T17:17:00 - Refactor for clarity, might break a few tests though (cryptography)
 2022-05-22T17:59:00 - Minor doc updates: linking to article on quantization (cryptography)
+2022-06-09T01:38:00 - Experimenting with FPGA constraints (source: Trimberger 'Three Ages of FPGAs') (cryptography)