diff --git a/README.md b/README.md
index 11543a7..7478a43 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,7 @@ This repository contains free resources to learn System Design concepts and prep
 ## ⚙️ Core Concepts
 - [Scalability](https://algomaster.io/learn/system-design/scalability)
 - [Availability](https://algomaster.io/learn/system-design/availability)
+- [Reliability](https://algomaster.io/learn/system-design/reliability)
 - [CAP Theorem](https://blog.algomaster.io/p/cap-theorem-explained)
 - [Consistent Hashing](https://blog.algomaster.io/p/consistent-hashing-explained)
 - [SPOF](https://blog.algomaster.io/p/system-design-how-to-avoid-single-point-of-failures)