diff --git a/app/main.py b/app/main.py
index d9b65b2..8bf3551 100644
--- a/app/main.py
+++ b/app/main.py
@@ -21,7 +21,7 @@ cached_data = None
 
 # api
 @app.get("/dropout/update")
-async def dropoutUpdate(force: str = True):
+async def dropoutUpdate(force: bool = True):
     global cached_data
     try:
         download.dropout.series(force)