diff --git a/tests/test_external_integrations.py b/tests/test_external_integrations.py
index 25781195..669fd9aa 100644
--- a/tests/test_external_integrations.py
+++ b/tests/test_external_integrations.py
@@ -323,7 +323,7 @@ class TestS3Integration:
                 try:
                     s3_client.delete_object(Bucket=bucket, Key=s3_key)
                 except Exception as exc:
-                    logger.warning(f"Failed to clean up S3 test object {s3_key}: {exc}")
+                    logger.warning("Failed to clean up S3 test object %s: %s", s3_key, exc)
 
 
 # ---------------------------------------------------------------------------
@@ -383,7 +383,7 @@ class TestDropboxIntegration:
                 try:
                     dbx.files_delete_v2(remote_path)
                 except Exception as exc:
-                    logger.warning(f"Failed to clean up Dropbox test file {remote_path}: {exc}")
+                    logger.warning("Failed to clean up Dropbox test file %s: %s", remote_path, exc)
 
 
 # ---------------------------------------------------------------------------
@@ -474,7 +474,7 @@ class TestOneDriveIntegration:
                         timeout=30,
                     )
                 except Exception as exc:
-                    logger.warning(f"Failed to clean up OneDrive test file {filename}: {exc}")
+                    logger.warning("Failed to clean up OneDrive test file %s: %s", filename, exc)
 
 
 # ---------------------------------------------------------------------------
@@ -488,7 +488,8 @@ class TestOneDriveIntegration:
 class TestAuthentikIntegration:
     """Verify Authentik / OpenID Connect discovery endpoint is reachable."""
 
-    def test_oidc_discovery_endpoint(self, original_env: dict) -> None:
+    @staticmethod
+    def test_oidc_discovery_endpoint(original_env: dict) -> None:
         """Validate that the OIDC discovery URL returns a valid JSON document."""
         import requests
 
@@ -502,7 +503,8 @@ class TestAuthentikIntegration:
         assert "authorization_endpoint" in data, "OIDC response missing 'authorization_endpoint'"
         assert "token_endpoint" in data, "OIDC response missing 'token_endpoint'"
 
-    def test_authentik_client_credentials_present(self, original_env: dict) -> None:
+    @staticmethod
+    def test_authentik_client_credentials_present(original_env: dict) -> None:
         """Validate that Authentik client credentials are configured alongside the config URL."""
         client_id = original_env.get("AUTHENTIK_CLIENT_ID")
         client_secret = original_env.get("AUTHENTIK_CLIENT_SECRET")
@@ -529,7 +531,8 @@ class TestFullOCRMetadataPipeline:
     Celery or Redis, by calling the service APIs directly.
     """
 
-    def test_ocr_then_metadata_extraction(self, original_env: dict) -> None:
+    @staticmethod
+    def test_ocr_then_metadata_extraction(original_env: dict) -> None:
         """Generate a PDF, OCR it with Azure, then extract metadata with OpenAI."""
         import re
 
diff --git a/tests/test_upload_tasks.py b/tests/test_upload_tasks.py
index 2de25a9b..e9175585 100644
--- a/tests/test_upload_tasks.py
+++ b/tests/test_upload_tasks.py
@@ -327,7 +327,7 @@ def test_upload_to_google_drive_accepts_file_id(sample_text_file):
     """Test that upload_to_google_drive accepts file_id parameter."""
     with (
         patch("app.tasks.upload_to_google_drive.get_google_drive_service") as mock_service,
-        patch("app.tasks.upload_to_google_drive.MediaFileUpload") as mock_media,
+        patch("app.tasks.upload_to_google_drive.MediaFileUpload"),
         patch("app.tasks.upload_to_google_drive.extract_metadata_from_file") as mock_metadata,
         patch("app.tasks.upload_to_google_drive.settings") as mock_settings,
         patch("app.tasks.upload_to_google_drive.log_task_progress"),
@@ -364,7 +364,7 @@ def test_upload_to_email_accepts_file_id(sample_text_file):
     """Test that upload_to_email accepts file_id parameter."""
     with (
         patch("app.tasks.upload_to_email.settings") as mock_settings,
-        patch("app.tasks.upload_to_email.smtplib.SMTP") as mock_smtp,
+        patch("app.tasks.upload_to_email.smtplib.SMTP"),
         patch("app.tasks.upload_to_email.get_email_template") as mock_template,
         patch("app.tasks.upload_to_email.extract_metadata_from_file") as mock_metadata,
         patch("app.tasks.upload_to_email.log_task_progress"),
diff --git a/tests/test_upload_webdav_comprehensive.py b/tests/test_upload_webdav_comprehensive.py
index 2a78d1e7..131ec5cd 100644
--- a/tests/test_upload_webdav_comprehensive.py
+++ b/tests/test_upload_webdav_comprehensive.py
@@ -532,14 +532,10 @@ class TestUploadToWebDAV:
 
     def test_module_importable(self):
         """Test that upload_to_webdav module is importable."""
-        from app.tasks.upload_to_webdav import upload_to_webdav
-
         assert callable(upload_to_webdav)
 
     def test_task_has_retry_configuration(self):
         """Test that the task has retry configuration from BaseTaskWithRetry."""
-        from app.tasks.upload_to_webdav import upload_to_webdav
-
         # BaseTaskWithRetry should provide retry configuration
         assert hasattr(upload_to_webdav, "max_retries")
         # BaseTaskWithRetry configures 3 retries