diff --git a/pyproject.toml b/pyproject.toml
index f71cbe0..30ed447 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,7 +10,7 @@ readme = "README.md"
 dependencies = [
     "argus-server>=1.15",
     "markdownify>=0.11",
-    "PyGithub>=1.58",
+    "PyGithub>=1.59",
     "requests>=2.14",
 ]
 requires-python = ">=3.8"
diff --git a/src/argus_ticket_github.py b/src/argus_ticket_github.py
index b13c454..be8aeea 100644
--- a/src/argus_ticket_github.py
+++ b/src/argus_ticket_github.py
@@ -61,7 +61,7 @@ def get_labels(
         missing_fields = []
 
         for field in labels_mapping:
-            if type(field) is dict:
+            if type(field).isinstance(dict):
                 # Information can be found in tags
                 label = incident_tags.get(field["tag"], None)
                 if label:
@@ -87,7 +87,7 @@ def create_client(endpoint, authentication):
 
         try:
             client = github.Github(
-                base_url=base_url, login_or_token=authentication["token"]
+                base_url=base_url, auth=github.Auth.Token(authentication["token"])
             )
         except Exception:
             client_error = "Github: Client could not be created."