diff --git a/k8s/grafana.yaml b/k8s/grafana.yaml
index 0032a52..135aa75 100644
--- a/k8s/grafana.yaml
+++ b/k8s/grafana.yaml
@@ -109,12 +109,14 @@ spec:
             periodSeconds: 30
             timeoutSeconds: 5
             failureThreshold: 3
+          # About 406 MiB in steady state in the cluster: request what it uses, and leave room
+          # for long-range dashboard queries before the limit OOM-kills it.
           resources:
             requests:
               cpu: 250m
-              memory: 256Mi
-            limits:
               memory: 512Mi
+            limits:
+              memory: 1Gi
           securityContext:
             allowPrivilegeEscalation: false
             capabilities: