diff --git a/mypy.ini b/mypy.ini
new file mode 100644
index 0000000..976ba02
--- /dev/null
+++ b/mypy.ini
@@ -0,0 +1,2 @@
+[mypy]
+ignore_missing_imports = True
diff --git a/pyseed/seed_client.py b/pyseed/seed_client.py
index bf92b0c..5f29800 100644
--- a/pyseed/seed_client.py
+++ b/pyseed/seed_client.py
@@ -3,20 +3,17 @@
 See also https://github.com/seed-platform/py-seed/main/LICENSE
 """
 
-# Imports from Standard Library
-from typing import Any, Dict, List, Optional, Set, Tuple, Union
-
-# Imports from Third Party Modules
 import json
 import logging
-import openpyxl
 import os
 import time
 from collections import Counter
 from csv import DictReader
 from datetime import date
 from pathlib import Path
-from urllib.parse import _NetlocResultMixinStr
+from typing import Any, Dict, List, Optional, Union
+
+from openpyxl import Workbook
 
 # Local Imports
 from pyseed.seed_client_base import SEEDReadWriteClient
@@ -1347,7 +1344,7 @@ def download_pm_report(self, pm_username: str, pm_password: str, pm_template: Di
         properties = response["properties"]
 
         # Create an XLSX workbook object.
-        workbook = openpyxl.Workbook()
+        workbook = Workbook()
 
         # Create a sheet object in the workbook.
         sheet = workbook.active
@@ -1360,14 +1357,16 @@ def download_pm_report(self, pm_username: str, pm_password: str, pm_template: Di
                     header_row.append(key)
 
         # Write the header row to the sheet object.
-        sheet.append(header_row)
+        if sheet:
+            sheet.append(header_row)
 
         # Loop over the list of dictionaries and write the data to the sheet object.
         for property in properties:
             row = []
             for key in header_row:
                 row.append(property[key])
-            sheet.append(row)
+            if sheet:
+                sheet.append(row)
 
         # Report Template name
         report_template_name = pm_template['name']
diff --git a/requirements-test.txt b/requirements-test.txt
index 8d50798..39ec4a5 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -1,9 +1,7 @@
 -r requirements.txt
 flake8==4.0.1
 mock==4.0.3
-mypy==0.910
-openpyxl==3.1.2
-openpyxl-stubs>=0.1.24
+mypy==1.10.0
 pre-commit==2.19.0
 pytest==7.1.2
 pytest-cov==3.0.0