diff --git a/skellytracker/process_folder_of_videos.py b/skellytracker/process_folder_of_videos.py
index 2ecab4a..8e9b924 100644
--- a/skellytracker/process_folder_of_videos.py
+++ b/skellytracker/process_folder_of_videos.py
@@ -3,7 +3,6 @@
 from multiprocessing import Pool, cpu_count
 from pathlib import Path
 from typing import Optional
-import numpy as np
 from pydantic import BaseModel
 
 
@@ -44,7 +43,7 @@
     from skellytracker.trackers.openpose_tracker.openpose_tracker import (
         OpenPoseTracker,
     )
-except:
+except ModuleNotFoundError:
     print("To use openpose_tracker, install skellytracker[openpose]")
 
 logger = logging.getLogger(__name__)
diff --git a/skellytracker/trackers/base_tracker/base_tracker.py b/skellytracker/trackers/base_tracker/base_tracker.py
index ee097e0..b097b36 100644
--- a/skellytracker/trackers/base_tracker/base_tracker.py
+++ b/skellytracker/trackers/base_tracker/base_tracker.py
@@ -171,8 +171,8 @@ class BaseCumulativeTracker(BaseTracker):
 
     def __init__(
         self,
-        tracked_object_names: List[str] = [],
-        recorder: Optional[BaseCumulativeRecorder] = None,
+        tracked_object_names: List[str],
+        recorder: BaseCumulativeRecorder,
         **data: Any,
     ):
         super().__init__(
diff --git a/skellytracker/trackers/base_tracker/model_info.py b/skellytracker/trackers/base_tracker/model_info.py
index 51000d6..f4e2695 100644
--- a/skellytracker/trackers/base_tracker/model_info.py
+++ b/skellytracker/trackers/base_tracker/model_info.py
@@ -1,4 +1,4 @@
-from typing import Dict, List, Optional
+from typing import Dict, List, Optional, Union
 
 
 class ModelInfo(dict):
@@ -7,7 +7,7 @@ class ModelInfo(dict):
     landmark_names: List[str]
     num_tracked_points: int
     tracked_object_names: Optional[list] = None
-    virtual_markers_definitions: Optional[Dict[str, Dict[str, List[str | float]]]] = None
+    virtual_markers_definitions: Optional[Dict[str, Dict[str, List[Union[str, float]]]]] = None
     segment_connections: Optional[Dict[str, Dict[str, str]]] = None
     center_of_mass_definitions: Optional[Dict[str, Dict[str, float]]] = None
     joint_hierarchy: Optional[Dict[str, List[str]]] = None
diff --git a/skellytracker/trackers/openpose_tracker/openpose_tracker.py b/skellytracker/trackers/openpose_tracker/openpose_tracker.py
index c9bd2e8..8a79df4 100644
--- a/skellytracker/trackers/openpose_tracker/openpose_tracker.py
+++ b/skellytracker/trackers/openpose_tracker/openpose_tracker.py
@@ -113,7 +113,7 @@ def process_video(
 
         # Update the subprocess command to use the unique output directory
         try:
-            subprocess.run(
+            subprocess.run(  # noqa: S603
                 openpose_command,
                 shell=False,
                 cwd=self.openpose_root_folder_path,  # Set the current working directory for the subprocess