diff --git a/README.md b/README.md
index 41a532e..ad8398d 100644
--- a/README.md
+++ b/README.md
@@ -44,9 +44,11 @@
 <br>
 
 * [vulnerabilities](https://github.com/bt3gl-labs/1337_blockchain_hacker_toolkit/tree/main/vulnerabilities)
+* [cryptography](https://github.com/bt3gl-labs/1337_blockchain_hacker_toolkit/tree/main/cryptography)
 * [top immunefi vulns](https://github.com/bt3gl-labs/1337_blockchain_hacker_toolkit/tree/main/top_immunefi_vulnerabilities)
 * [gray hacker stuff](https://github.com/bt3gl-labs/1337_blockchain_hacker_toolkit/tree/main/gray_hat_stuff)
 
+
 <br>
 
 ---