diff --git a/kube-stale-resources.py b/kube-stale-resources.py
index e547d62..ceea38e 100644
--- a/kube-stale-resources.py
+++ b/kube-stale-resources.py
@@ -136,14 +136,14 @@ def main():
 
     if args.blacklist_file:
         print(f'Reading blacklist file {args.blacklist_file}...')
-        with open(args.blacklist_file, 'r') as f:
+        with open(args.blacklist_file, 'r', encoding='utf-8') as f:
             blacklist_regexs += list(filter(lambda x: not re.match(r'^\s*$', x), f.read().split('\n')))
 
     print('Retrieving target state...')
     if args.target_manifests_file == '-':
         target_tuples = get_target_namespaced_resources(sys.stdin)
     else:
-        with open(args.target_manifests_file, 'r') as f:
+        with open(args.target_manifests_file, 'r', encoding='utf-8') as f:
             target_tuples = get_target_namespaced_resources(f)
 
     print(f'Retrieving live state from {args.k8s_apiserver_url}...')
diff --git a/pyproject.toml b/pyproject.toml
index 5f2e8bb..154aa64 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,7 +17,7 @@ requests = "~2.26"
 
 [tool.poetry.dev-dependencies]
 mypy = "0.910"
-pylint = "~2.9"
+pylint = "~2.10"
 rope = "~0.19"
 types-PyYAML = "~5.4"
 types-requests = "~2.25"