diff --git a/swan-cern/values.yaml b/swan-cern/values.yaml
index e9580d1d..76f7f044 100644
--- a/swan-cern/values.yaml
+++ b/swan-cern/values.yaml
@@ -71,7 +71,7 @@ swan:
   jupyterhub:
     singleuser:
       cpu:
-        guarantee: 1
+        guarantee: 0.5
     scheduling:
       userPods:
         nodeAffinity: