diff --git a/charts/kube-prometheus-stack/Chart.yaml b/charts/kube-prometheus-stack/Chart.yaml
index b57ddcdddfdf..0d798928b608 100644
--- a/charts/kube-prometheus-stack/Chart.yaml
+++ b/charts/kube-prometheus-stack/Chart.yaml
@@ -21,7 +21,7 @@ name: kube-prometheus-stack
 sources:
   - https://github.com/prometheus-community/helm-charts
   - https://github.com/prometheus-operator/kube-prometheus
-version: 51.0.3
+version: 51.1.0
 appVersion: v0.68.0
 kubeVersion: ">=1.19.0-0"
 home: https://github.com/prometheus-operator/kube-prometheus
diff --git a/charts/kube-prometheus-stack/templates/prometheus-operator/deployment.yaml b/charts/kube-prometheus-stack/templates/prometheus-operator/deployment.yaml
index 1017a00bea5b..67d0024d1428 100644
--- a/charts/kube-prometheus-stack/templates/prometheus-operator/deployment.yaml
+++ b/charts/kube-prometheus-stack/templates/prometheus-operator/deployment.yaml
@@ -91,10 +91,10 @@ spec:
             {{- else }}
             - --prometheus-config-reloader={{ $configReloaderRegistry }}/{{ .Values.prometheusOperator.prometheusConfigReloader.image.repository }}:{{ .Values.prometheusOperator.prometheusConfigReloader.image.tag | default .Chart.AppVersion }}
             {{- end }}
-            - --config-reloader-cpu-request={{ .Values.prometheusOperator.prometheusConfigReloader.resources.requests.cpu }}
-            - --config-reloader-cpu-limit={{ .Values.prometheusOperator.prometheusConfigReloader.resources.limits.cpu }}
-            - --config-reloader-memory-request={{ .Values.prometheusOperator.prometheusConfigReloader.resources.requests.memory }}
-            - --config-reloader-memory-limit={{ .Values.prometheusOperator.prometheusConfigReloader.resources.limits.memory }}
+            - --config-reloader-cpu-request={{ (((.Values.prometheusOperator.prometheusConfigReloader.resources).requests).cpu) | default 0 }}
+            - --config-reloader-cpu-limit={{ (((.Values.prometheusOperator.prometheusConfigReloader.resources).limits).cpu) | default 0 }}
+            - --config-reloader-memory-request={{ (((.Values.prometheusOperator.prometheusConfigReloader.resources).requests).memory) | default 0 }}
+            - --config-reloader-memory-limit={{ (((.Values.prometheusOperator.prometheusConfigReloader.resources).limits).memory) | default 0 }}
             {{- if .Values.prometheusOperator.prometheusConfigReloader.enableProbe }}
             - --enable-config-reloader-probes=true
             {{- end }}
diff --git a/charts/kube-prometheus-stack/values.yaml b/charts/kube-prometheus-stack/values.yaml
index 611ce608bbc5..697ef599f8d1 100644
--- a/charts/kube-prometheus-stack/values.yaml
+++ b/charts/kube-prometheus-stack/values.yaml
@@ -2377,13 +2377,13 @@ prometheusOperator:
     enableProbe: false
 
     # resource config for prometheusConfigReloader
-    resources:
-      requests:
-        cpu: 200m
-        memory: 50Mi
-      limits:
-        cpu: 200m
-        memory: 50Mi
+    resources: {}
+      # requests:
+      #   cpu: 200m
+      #   memory: 50Mi
+      # limits:
+      #   cpu: 200m
+      #   memory: 50Mi
 
   ## Thanos side-car image when configured
   ##