diff --git a/notes.md b/notes.md
index 4ecd1ea78..d7d07b1cc 100644
--- a/notes.md
+++ b/notes.md
@@ -120,3 +120,4 @@
 2019-04-27T21:11:00 - Quick fix, referencing a known issue from the official repo (transformers)
 2019-04-27T03:14:00 - Refactor for clarity, might break a few tests though (transformers)
 2019-06-27T03:07:00 - Trying out boneh-franklin approach for IBE (ref. 2003 paper) (transformers)
+2019-06-27T04:59:00 - Experimenting with FPGA constraints (source: Trimberger 'Three Ages of FPGAs') (transformers)