diff --git a/README.md b/README.md
index 03e6ced..4f3ebbe 100644
--- a/README.md
+++ b/README.md
@@ -15,4 +15,12 @@ $ cd src/docs
 $ make html
 ```
 
+# How to run Pytest tests
+
+```
+$ export PYTHONPATH=src
+$ pytest
+```
+
+