diff --git a/src/openjarvis/connectors/slack_connector.py b/src/openjarvis/connectors/slack_connector.py
index f7c4f0dc..65c8a715 100644
--- a/src/openjarvis/connectors/slack_connector.py
+++ b/src/openjarvis/connectors/slack_connector.py
@@ -25,7 +25,10 @@ from openjarvis.tools._stubs import ToolSpec
 
 _SLACK_API_BASE = "https://slack.com/api"
 _SLACK_AUTH_ENDPOINT = "https://slack.com/oauth/v2/authorize"
-_SLACK_SCOPES = "channels:read,channels:history,groups:read,groups:history,im:read,im:history,mpim:read,mpim:history,users:read"
+_SLACK_SCOPES = (
+    "channels:read,channels:history,groups:read,groups:history,"
+    "im:read,im:history,mpim:read,mpim:history,users:read"
+)
 _DEFAULT_CREDENTIALS_PATH = str(DEFAULT_CONFIG_DIR / "connectors" / "slack.json")
 
 # ---------------------------------------------------------------------------
diff --git a/tests/cli/test_serve_channel_wiring.py b/tests/cli/test_serve_channel_wiring.py
index 4542bf2c..bf199d8e 100644
--- a/tests/cli/test_serve_channel_wiring.py
+++ b/tests/cli/test_serve_channel_wiring.py
@@ -226,7 +226,8 @@ class TestChannelToolLoading:
         assert system.tools[0].spec.name == "fake"
 
     def test_non_tool_agent_receives_empty_tools(self, tmp_path):
-        """JarvisSystem with no tools list results in empty tools — simple agent unaffected."""
+        """JarvisSystem with no tools list results in empty tools — simple agent
+        unaffected."""
         config = JarvisConfig()
         config.sessions.db_path = str(tmp_path / "sessions.db")