diff --git a/README.md b/README.md
index 26cc188..2d96b66 100644
--- a/README.md
+++ b/README.md
@@ -83,9 +83,11 @@ The poetry virtual environment should be available in the the project folder as
 For testing you need to install [nox](https://nox.thea.codes/en/stable/) separately from the project venv created by poetry. For testing just use the `nox` command within the project folder. You can run all the nox sessions separately if need, e.g.,
 
 - only linting `nox -rs lint`
-- only testing `nox -rs test`
+- only testing `nox -rs tests`
 
-For different sessions see the `nox.py` file. Please make sure all tests and checks pass before opening pull requests!
+For different sessions see the `nox.py` file. You can run `nox --list` to see a list of all available sessions.
+
+Please make sure all tests and checks pass before opening pull requests!
 
 ### [pre-commit](https://pre-commit.com/)
 
diff --git a/noxfile.py b/noxfile.py
index cad7327..cf99713 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -13,6 +13,7 @@
     "KARMABOT_SLACK_INVITE_USER_TOKEN": "FAKE_INVITE_USER_TOKEN",
     "KARMABOT_GENERAL_CHANNEL": "GENERAL",
     "KARMABOT_ADMINS": "FAKE_ADMIN",
+    "KARMABOT_DATABASE_URL": "FAKE_URL",
 }
 
 nox.options.sessions = "lint", "mypy", "safety", "tests"