Correct extra
@@ -106,6 +106,6 @@ Create a new release on [GitHub](https://github.com/pymedphys/pymedphys/releases
Perform a final check to ensure the new version was released successfully. To do this, create a fresh Python virtual environment on your machine. Then install the new version of pymedphys and ensure all tests are passing as expected.
```python
-pip install pymedphys[user,dev]
+pip install pymedphys[all]
pymedphys dev tests
```
