diff --git a/README.md b/README.md
index 91e48f3..6205b75 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,7 @@ We will go through a fast intro to Web3 and how to hack DCTF. Anyone present at
 
 This is a free flow workshop. Six can explain these you in 20 mins, but vibes will tell how long you stay and hack.
 
+For generating the ECDSA signatures and message hashes, use: https://git.hsbp.org/six/eth_keygen/src/branch/master/ethkeygen.py
 
 ### Short-term ToDo