diff --git a/README.md b/README.md
index 04c28bf..117f308 100644
--- a/README.md
+++ b/README.md
@@ -13,4 +13,5 @@ Run `./burn.sh`
 
 - 46-avr.rules ... https://gist.github.com/TobleMiner/7507b0571e9151dffaa638628601fdd9
 - Optiboot ... Optiboot-8.0.zip from https://github.com/Optiboot/optiboot/releases/tag/v8.0
+- Fuse calculator ... https://eleccelerator.com/fusecalc/fusecalc.php?chip=atmega328p