diff --git a/docs/how-to/develop-on-borgmatic.md b/docs/how-to/develop-on-borgmatic.md
index e6590c6..e8f04dc 100644
--- a/docs/how-to/develop-on-borgmatic.md
+++ b/docs/how-to/develop-on-borgmatic.md
@@ -41,7 +41,7 @@ you're in the `borgmatic/` working copy, install tox, which is used for
 setting up testing environments:
 
 ```bash
-sudo pip3 install tox
+pip3 install --user tox
 ```
 
 Finally, to actually run tests, run: