diff --git a/pyproject.toml b/pyproject.toml
index a69156c..e5dd8e5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,7 +5,6 @@ authors = [
     {name = "OpenXbox"},
 ]
 dependencies = [
-    "appdirs",
     "ecdsa",
     "httpx",
     "ms_cv",
@@ -31,6 +30,11 @@ dynamic = ["version"]
 [project.urls]
 Homepage = "https://github.com/tr4nt0r/python-xbox"
 
+[project.optional-dependencies]
+cli = [
+    "platformdirs>=4.5.0"
+]
+
 [project.scripts]
 xbox-authenticate = "pythonxbox.scripts.authenticate:main"
 xbox-change-gt = "pythonxbox.scripts.change_gamertag:main"
@@ -90,7 +94,7 @@ packages = ["src/pythonxbox"]
 [tool.hatch.envs.default]
 python = "3.13"
 dependencies = [
-    "appdirs==1.4.4",
+    "platformdirs==4.5.0",
     "ecdsa==0.19.1",
     "httpx==0.28.1",
     "ms_cv==0.1.1",
diff --git a/src/pythonxbox/scripts/__init__.py b/src/pythonxbox/scripts/__init__.py
index 6eca9df..aa75f23 100644
--- a/src/pythonxbox/scripts/__init__.py
+++ b/src/pythonxbox/scripts/__init__.py
@@ -1,6 +1,6 @@
 import os
 
-from appdirs import user_data_dir
+from platformdirs import user_data_dir
 
 CLIENT_ID = "388ea51c-0b25-4029-aae2-17df49d23905"
 # No secret needed, we registered as "Desktop App" in Azure AD
diff --git a/src/pythonxbox/scripts/authenticate.py b/src/pythonxbox/scripts/authenticate.py
index 6fb2587..5cf265a 100644
--- a/src/pythonxbox/scripts/authenticate.py
+++ b/src/pythonxbox/scripts/authenticate.py
@@ -96,7 +96,7 @@ async def do_auth(
 
         with open(token_filepath, mode="w") as f:
             print(f"Finished authentication, writing tokens to {token_filepath}")
-            f.write(auth_mgr.oauth.json())
+            f.write(auth_mgr.oauth.model_dump_json())
 
 
 async def async_main():