diff --git a/README.md b/README.md
index 5bd1169..d98b478 100644
--- a/README.md
+++ b/README.md
@@ -119,6 +119,7 @@ A curated list of insanely awesome libraries, packages and resources for Quants
 - [Stock-Prediction-Models](https://github.com/huseinzol05/Stock-Prediction-Models) - Gathers machine learning and deep learning models for Stock forecasting including trading bots and simulations.
 - [tda-api](https://github.com/alexgolec/tda-api) - Gather data and trade equities, options, and ETFs via TDAmeritrade.
 - [vectorbt](https://github.com/polakowo/vectorbt) - Find your trading edge, using a powerful toolkit for backtesting, algorithmic trading, and research.
+- [Lean](https://github.com/QuantConnect/Lean) - Lean Algorithmic Trading Engine by QuantConnect (Python, C#).
 
 ### Risk Analysis