diff --git a/arkhamdb.py b/arkhamdb.py
index e2b9b7b..ca81063 100644
--- a/arkhamdb.py
+++ b/arkhamdb.py
@@ -1,12 +1,33 @@
-import asyncio
-from typing import Any
+from typing import TypedDict, Optional, Union
 
 import aiohttp
 
 ARKHAMDB_ORIGIN = 'https://arkhamdb.adamgoldsmith.name'
 
-ArkhamDBDeck = Any  # TODO: better typing
 
+class ArkhamDBDeck(TypedDict):
+    id: int
+    name: str
+    date_creation: str
+    date_update: str
+    description_md: str
+    user_id: Optional[str]
+    investigator_code: str
+    investigator_name: str
+    slots: dict[str, int]
+    sideSlots: Union[list[str], dict[str, int]]
+    ignoreDeckLimitSlots: Optional[str]
+    version: str
+    xp: int
+    xp_spent: int
+    xp_adjustment: int
+    exile_string: Optional[str]
+    taboo_id: int
+    meta: str
+    tags: str
+    previous_deck: int
+    next_deck: int
+    problem: Optional[str]
 
 class ArkhamDBClient:
     _session: aiohttp.ClientSession