diff --git a/README.md b/README.md
index 786c852..4f7689c 100644
--- a/README.md
+++ b/README.md
@@ -68,6 +68,7 @@ A curated list of insanely awesome libraries, packages and resources for Quants
 - [pipeline-live](https://github.com/alpacahq/pipeline-live) - zipline's pipeline capability with IEX for live trading.
 - [zipline-extensions](https://github.com/quantrocket-llc/zipline-extensions) - Zipline extensions and adapters for QuantRocket.
 - [moonshot](https://github.com/quantrocket-llc/moonshot) - Vectorized backtester and trading engine for QuantRocket based on Pandas.
+- [PyPortfolioOpt](https://github.com/robertmartin8/PyPortfolioOpt) - Financial portfolio optimisation in python, including classical efficient frontier and advanced methods.
 
 ### Risk Analysis