diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 682a307..ea595a0 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.4.0
+    rev: v4.6.0
     hooks:
       - id: check-added-large-files
         args: [--maxkb=100]
@@ -8,35 +8,39 @@ repos:
       - id: check-case-conflict
       - id: check-docstring-first
       - id: check-executables-have-shebangs
+      - id: check-json
       - id: check-merge-conflict
       - id: check-yaml
       - id: detect-private-key
       - id: end-of-file-fixer
-        exclude: '\.json$'
       - id: fix-byte-order-marker
-      - id: fix-encoding-pragma
       - id: mixed-line-ending
       # - id: no-commit-to-branch
       #   args: [--branch, main]
       - id: trailing-whitespace
         args: [--markdown-linebreak-ext=md]
-  - repo: https://github.com/ambv/black
-    rev: 23.1.0
+  - repo: https://github.com/python/black
+    rev: 24.4.2
     hooks:
       - id: black
-  - repo: https://github.com/pycqa/isort
-    rev: 5.12.0
+  - repo: https://github.com/pre-commit/mirrors-isort
+    rev: v5.10.1
     hooks:
       - id: isort
   - repo: https://github.com/pycqa/flake8
-    rev: 6.0.0
+    rev: 7.0.0
     hooks:
       - id: flake8
+  - repo: https://github.com/asottile/pyupgrade
+    rev: v3.15.2
+    hooks:
+      - id: pyupgrade
+        args: ['--py36-plus']
   - repo: https://github.com/asottile/blacken-docs
-    rev: 1.13.0
+    rev: 1.16.0
     hooks:
       - id: blacken-docs
-        additional_dependencies: [black==22.3.0]
+        additional_dependencies: [black==24.4.2]
   # - repo: https://github.com/homebysix/pre-commit-macadmin
   #   rev: profile-manifests
   #   exclude: "last_build\.json"
diff --git a/build.py b/build.py
index d3ca52c..a5514a6 100755
--- a/build.py
+++ b/build.py
@@ -1,7 +1,6 @@
 #!/usr/bin/env python3
-# -*- coding: utf-8 -*-
 
-# Copyright 2021 Elliot Jordan
+# Copyright 2021-2024 Elliot Jordan
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -20,7 +19,7 @@
 
 
 __author__ = "Elliot Jordan"
-__version__ = "1.0.3"
+__version__ = "1.1.0"
 
 import argparse
 import json
@@ -202,12 +201,16 @@ def process_subkeys(subkeys):
             if "items" in properties[name]:
                 # If the parent type was array, we're only expecting a single dict
                 # here, since an array should only contain a single object type.
+                # TODO: Validate this assumption. Some warnings seen in the wild.
                 subprop_keys = list(subprop.keys())
                 if len(subprop_keys) > 1:
                     print(
                         "WARNING: Array type should only have one subproperty "
-                        "key. Multiple found: %s" % subprop_keys
+                        "key. Skipping all but the first: %s" % subprop_keys
                     )
+                elif len(subprop_keys) == 0:
+                    print("WARNING: No subproperty keys found in %s key." % name)
+                    continue
                 array_props = subprop[subprop_keys[0]]
                 properties[name]["items"] = array_props
             else:
@@ -225,7 +228,7 @@ def convert_to_jamf_manifest(data, property_order_increment=5):
     # Create schema object
     try:
         schema = {
-            "title": "%s (%s)" % (data["pfm_title"], data["pfm_domain"]),
+            "title": "{} ({})".format(data["pfm_title"], data["pfm_domain"]),
             "description": data["pfm_description"],
             "properties": process_subkeys(data["pfm_subkeys"]),
         }
@@ -252,7 +255,7 @@ def write_to_file(path, data):
         os.makedirs(path_head)
 
     # Write file
-    with open(os.path.join(path_head, path_tail), "w") as openfile:
+    with open(os.path.join(path_head, path_tail), "w", encoding="utf-8") as openfile:
         openfile.write(
             json.dumps(
                 data,
@@ -267,7 +270,7 @@ def write_to_file(path, data):
 def update_readme(count):
     """Updates README.md file with latest manifest count."""
 
-    with open("README.md", "r") as f:
+    with open("README.md", encoding="utf-8") as f:
         readme = f.readlines()
     for idx, line in enumerate(readme):
         if line.startswith("![Manifest Count]("):
@@ -276,7 +279,7 @@ def update_readme(count):
                 % count
             )
             break
-    with open("README.md", "w") as f:
+    with open("README.md", "w", encoding="utf-8") as f:
         f.write("".join(readme))
     print("Updated README.md")