diff --git a/README.md b/README.md
index 067bcff..c23716b 100644
--- a/README.md
+++ b/README.md
@@ -48,7 +48,7 @@ print(f"Volatility: {sigma*100:.1f}%")
 # ... post-process solution in Python
 ```
 
-[![Hands-On Optimization with AMPL in Python](https://portal.ampl.com/dl/ads/mo_book_big.png)](https://ampl.com/mo-book/)
+[![Hands-On Mathematical Optimization with AMPL in Python](https://portal.ampl.com/dl/ads/mo_book_big.png)](https://ampl.com/mo-book/)
 
 [[Documentation](https://amplpy.readthedocs.io/)] [[AMPL Modules for Python](https://dev.ampl.com/ampl/python/modules.html)] [[AMPL on Streamlit](https://ampl.com/streamlit)] [[AMPL on Google Colab](https://colab.ampl.com/)] [[Community Edition](https://ampl.com/ce)]
 
diff --git a/docs/source/index.rst b/docs/source/index.rst
index ce810d8..46ba94d 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -79,7 +79,7 @@ built on different languages by just switching the API used.
             :alt: Open In SageMaker Studio Lab
 
 Many more notebooks with examples are available on the `AMPL Model Colaboratory <https://colab.ampl.com/>`_
-and the new book `Hands-On Optimization with AMPL in Python 🐍 <https://ampl.com/mo-book/>`_.
+and the new book `Hands-On Mathematical Optimization with AMPL in Python 🐍 <https://ampl.com/mo-book/>`_.
 
 Installation & minimal example
 ------------------------------