diff --git a/lib/installed_clients/WSLargeDataIOClient.py b/lib/installed_clients/WSLargeDataIOClient.py
index 2b571378..c185bfee 100644
--- a/lib/installed_clients/WSLargeDataIOClient.py
+++ b/lib/installed_clients/WSLargeDataIOClient.py
@@ -24,7 +24,7 @@ def __init__(
             password=None, token=None, ignore_authrc=False,
             trust_all_ssl_certificates=False,
             auth_svc='https://ci.kbase.us/services/auth/api/legacy/KBase/Sessions/Login',
-            service_ver='release',
+            service_ver='beta',
             async_job_check_time_ms=100, async_job_check_time_scale_percent=150, 
             async_job_check_max_time_ms=300000):
         if url is None: