diff --git a/tests/test_auth.py b/tests/test_auth.py
index c8a9eac..95f74f0 100644
--- a/tests/test_auth.py
+++ b/tests/test_auth.py
@@ -12,10 +12,8 @@ import time
 import types
 
 import jwt
-import pytest
 from cryptography.hazmat.primitives.asymmetric import ed25519, rsa
 
-from intervals_mcp_server import auth as auth_mod
 from intervals_mcp_server.auth import AuthentikTokenVerifier, _audience_variants, build_auth
 
 ISSUER = "https://auth.example/application/o/x/"
diff --git a/tests/test_custom_items.py b/tests/test_custom_items.py
index 48a07a4..d7bbb38 100644
--- a/tests/test_custom_items.py
+++ b/tests/test_custom_items.py
@@ -8,7 +8,6 @@ and the error/empty branches.
 
 import asyncio
 
-import pytest
 
 from intervals_mcp_server.tools import custom_items
 
@@ -60,7 +59,7 @@ def test_create_builds_full_payload(monkeypatch):
     rec = _patch(monkeypatch, lambda _k: {"id": 9, "name": "Chart", "type": "FITNESS_CHART"})
     out = _run(
         custom_items.create_custom_item(
-            name="Chart", item_type="FITNESS_CHART", 
+            name="Chart", item_type="FITNESS_CHART",
             description="desc", content={"a": 1}, visibility="PRIVATE",
         )
     )
diff --git a/tests/test_events.py b/tests/test_events.py
index f9715b2..7d2a115 100644
--- a/tests/test_events.py
+++ b/tests/test_events.py
@@ -112,7 +112,7 @@ def test_add_event_posts_when_no_event_id(monkeypatch):
     rec = _patch(monkeypatch, lambda _k: {"id": "e99"})
     out = _run(
         events.add_or_update_event(
-            workout_type="Ride", name="Threshold", 
+            workout_type="Ride", name="Threshold",
             start_date="2026-07-10", moving_time=3600, distance=40000,
             workout_doc=WorkoutDoc(description="d", steps=[Step(duration=600)]),
         )
@@ -128,7 +128,7 @@ def test_update_event_puts_when_event_id(monkeypatch):
     rec = _patch(monkeypatch, lambda _k: {"id": "e5"})
     _run(
         events.add_or_update_event(
-            workout_type="Ride", name="Threshold", 
+            workout_type="Ride", name="Threshold",
             event_id="e5", start_date="2026-07-10",
         )
     )
diff --git a/tests/test_server.py b/tests/test_server.py
index 50ffb9c..dc0583a 100644
--- a/tests/test_server.py
+++ b/tests/test_server.py
@@ -465,7 +465,7 @@ def test_get_athlete_power_curves(monkeypatch):
     result = asyncio.run(
         get_athlete_power_curves(
             activity_type="Ride",
-            
+
         )
     )
     assert "Power Curves (Ride):" in result
@@ -492,7 +492,7 @@ def test_get_athlete_power_curves_custom_durations(monkeypatch):
         get_athlete_power_curves(
             activity_type="Ride",
             durations=[5, 60],
-            
+
         )
     )
     assert "5s:" in result
@@ -518,7 +518,7 @@ def test_get_athlete_power_curves_without_normalised(monkeypatch):
         get_athlete_power_curves(
             activity_type="Ride",
             include_normalised=False,
-            
+
         )
     )
     assert "W/kg" not in result
@@ -542,7 +542,7 @@ def test_get_athlete_power_curves_date_validation(monkeypatch):
         get_athlete_power_curves(
             activity_type="Ride",
             start_date="2026-01-01",
-            
+
         )
     )
     assert "Error" in result
@@ -566,7 +566,7 @@ def test_get_athlete_power_curves_no_curves_selected(monkeypatch):
             activity_type="Ride",
             this_season=False,
             last_season=False,
-            
+
         )
     )
     assert "Error" in result
@@ -675,7 +675,7 @@ def test_create_custom_item_with_string_content(monkeypatch):
         create_custom_item(
             name="Activity Field",
             item_type="ACTIVITY_FIELD",
-            
+
             content='{"expression": "icu_training_load"}',  # type: ignore[arg-type]
         )
     )
@@ -744,7 +744,7 @@ def test_create_custom_item_with_invalid_json_content(monkeypatch):
         create_custom_item(
             name="Bad Item",
             item_type="FITNESS_CHART",
-            
+
             content="not valid json",  # type: ignore[arg-type]
         )
     )