diff --git a/config/clusters/utoronto/support.values.yaml b/config/clusters/utoronto/support.values.yaml
index c87482edba..74e7c9526d 100644
--- a/config/clusters/utoronto/support.values.yaml
+++ b/config/clusters/utoronto/support.values.yaml
@@ -23,10 +23,11 @@ prometheus:
           hosts:
             - prometheus.utoronto.2i2c.cloud
     resources:
+      # utoronto's prometheus seems to lie stable below 10Gi at around 6Gi
       requests:
-        memory: 16Gi
+        memory: 12Gi
       limits:
-        memory: 16Gi
+        memory: 12Gi
 
 grafana:
   grafana.ini: