diff --git a/src/ai/backend/storage/vast/vastdata_client.py b/src/ai/backend/storage/vast/vastdata_client.py
index 71628d96a6..ea54a45386 100644
--- a/src/ai/backend/storage/vast/vastdata_client.py
+++ b/src/ai/backend/storage/vast/vastdata_client.py
@@ -28,8 +28,8 @@
 log = BraceStyleAdapter(logging.getLogger(__spec__.name))  # type: ignore[name-defined]
 
 
-DEFAULT_ACCESS_TOKEN_SPAN: Final = timedelta(hours=1)
-DEFAULT_REFRESH_TOKEN_SPAN: Final = timedelta(hours=24)
+DEFAULT_ACCESS_TOKEN_SPAN: Final = timedelta(minutes=1)
+DEFAULT_REFRESH_TOKEN_SPAN: Final = timedelta(minutes=10)
 
 
 VASTQuotaID = NewType("VASTQuotaID", str)