diff --git a/README.md b/README.md
index d2a8cb4542ef1354e29898b40eb3a10596deea97..9692593b1f889d388b3a4e9e35f1cd9cb5391c78 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,7 @@ recovery using GRACE type satellite observations.
 
 <!-- vim-markdown-toc GitLab -->
 
+* [Requirements](#requirements)
 * [Installation](#installation)
 * [Usage](#usage)
 * [Performance](#performance)
@@ -32,10 +33,16 @@ Please reference this article if you use GRACETOOLS:
 
 **Darbeheshti N., Wöske F., Weigelt M., McCullough C., Wu H. (2018) GRACETOOLS - GRACE gravity field recovery tools, Geosciences.**
 
+## Requirements
+
+MATLAB and the [Parallel Computing
+Toolbox](https://de.mathworks.com/help/distcomp/).
+
 ## Installation
 
 Download gracetools as a zip file and extract it somewhere on your computer.
-- [gracetools.zip](https://gitlab.aei.uni-hannover.de/geoq/gracetools/-/archive/master/gracetools-master.zip)
+
+- [**gracetools.zip**](https://gitlab.aei.uni-hannover.de/geoq/gracetools/-/archive/master/gracetools-master.zip)
 
 Or clone the repository with `git clone`: