diff --git a/python/DEVELOPMENT.md b/python/DEVELOPMENT.md
index 5202701d6ed..04f84c06867 100644
--- a/python/DEVELOPMENT.md
+++ b/python/DEVELOPMENT.md
@@ -16,6 +16,14 @@ re-building.
 
 ## Running tests
 
+To run the tests, first install the test packages:
+
+```shell
+pip install '.[tests]'
+```
+
+then:
+
 ```shell
 make test
 ```