diff --git a/topology/University of Oklahoma/OU ATLAS/OU_OSCER_ATLAS_downtime.yaml b/topology/University of Oklahoma/OU ATLAS/OU_OSCER_ATLAS_downtime.yaml
index fa5116dcf..023661a50 100644
--- a/topology/University of Oklahoma/OU ATLAS/OU_OSCER_ATLAS_downtime.yaml	
+++ b/topology/University of Oklahoma/OU ATLAS/OU_OSCER_ATLAS_downtime.yaml	
@@ -690,7 +690,7 @@
   Description: SLURM upgrade
   Severity: Outage
   StartTime: Jul 19, 2023 13:00 +0000
-  EndTime: Jul 20, 2023 04:00 +0000
+  EndTime: Jul 20, 2023 02:30 +0000
   CreatedTime: Jul 17, 2023 17:48 +0000
   ResourceName: OU_OSCER_ATLAS
   Services: