diff --git a/src/data/roadmaps/cyber-security/content/103-security-skills-and-knowledge/100-cryptography/index.md b/src/data/roadmaps/cyber-security/content/103-security-skills-and-knowledge/100-cryptography/index.md
index ae3286d10..bd6525954 100644
--- a/src/data/roadmaps/cyber-security/content/103-security-skills-and-knowledge/100-cryptography/index.md
+++ b/src/data/roadmaps/cyber-security/content/103-security-skills-and-knowledge/100-cryptography/index.md
@@ -31,3 +31,5 @@ Proper key management is crucial to maintain the security of encrypted data. Key
 Cryptanalysis is the process of attempting to break cryptographic systems, often by exploiting weaknesses in the algorithms, protocols, or key management processes. The strength of a cryptographic system lies in its resistance to cryptanalysis. As a cyber security professional, understanding cryptanalysis techniques can help you identify and protect against potential vulnerabilities in your organization's cryptographic infrastructure.
 
 In conclusion, cryptography is a fundamental aspect of cyber security, offering a layer of protection for sensitive data in digital networks. To effectively implement cryptography in your organization, you should be familiar with the various types of cryptography, cryptographic protocols, and key management best practices, and understand the potential threats posed by cryptanalysis.
+
+- [Cryptography for Dummies (TryHackMe)](https://tryhackme.com/room/cryptographyfordummies)
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