diff --git a/README.md b/README.md
index 1b16211d2..64222894c 100644
--- a/README.md
+++ b/README.md
@@ -239,5 +239,5 @@ The following assumes you have a working installation of Docker.
 Set up the environment and run the tests on demand.
 
 ```shell
-docker build . -t kasa && docker run -v $(PWD)/kasa/tests:/opt/python-kasa/kasa/tests kasa pytest
+docker build . -t kasa && docker run -v $(pwd)/kasa/tests:/opt/python-kasa/kasa/tests kasa pytest
 ```
diff --git a/requirements_test.txt b/requirements_test.txt
index 901116e33..6c9b7bd12 100644
--- a/requirements_test.txt
+++ b/requirements_test.txt
@@ -6,3 +6,5 @@ pytest-mock
 asyncclick
 voluptuous
 codecov
+wheel
+setuptools