diff --git a/services/library-desk/src/clients/wikijs_client.py b/services/library-desk/src/clients/wikijs_client.py
index f2aaff8..a64da64 100644
--- a/services/library-desk/src/clients/wikijs_client.py
+++ b/services/library-desk/src/clients/wikijs_client.py
@@ -351,7 +351,8 @@ class WikiJSClient:
         """
 
         try:
-            data = await self._execute_query(query, {"id": page_id})
+            # Ensure page_id is int (GraphQL requires Int, not String)
+            data = await self._execute_query(query, {"id": int(page_id)})
             page = data.get("pages", {}).get("single")
 
             # Extract tag strings from tag objects