diff --git a/README.md b/README.md
index 210b9a83..ac71eb3e 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,6 @@
 # Argo Helm Charts
 
+[![Slack](https://img.shields.io/badge/slack-%23argo--helm--charts-brightgreen.svg?logo=slack)](https://argoproj.github.io/community/join-slack)
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
 [![Chart Publish](https://github.com/argoproj/argo-helm/actions/workflows/publish.yml/badge.svg?branch=main)](https://github.com/argoproj/argo-helm/actions/workflows/publish.yml)
 [![Artifact HUB](https://img.shields.io/endpoint?url=https://artifacthub.io/badge/repository/argo)](https://artifacthub.io/packages/search?repo=argo)
diff --git a/charts/argo-cd/Chart.yaml b/charts/argo-cd/Chart.yaml
index 264b9210..ea4a432a 100644
--- a/charts/argo-cd/Chart.yaml
+++ b/charts/argo-cd/Chart.yaml
@@ -1,9 +1,9 @@
 apiVersion: v2
-appVersion: v2.6.3
+appVersion: v2.6.4
 kubeVersion: ">=1.22.0-0"
 description: A Helm chart for Argo CD, a declarative, GitOps continuous delivery tool for Kubernetes.
 name: argo-cd
-version: 5.24.2
+version: 5.26.0
 home: https://github.com/argoproj/argo-helm
 icon: https://argo-cd.readthedocs.io/en/stable/assets/logo.png
 sources:
diff --git a/charts/argo-cd/README.md b/charts/argo-cd/README.md
index b359cb85..9e08f635 100644
--- a/charts/argo-cd/README.md
+++ b/charts/argo-cd/README.md
@@ -500,7 +500,11 @@ NAME: my-release
 | controller.metrics.applicationLabels.enabled | bool | `false` | Enables additional labels in argocd_app_labels metric |
 | controller.metrics.applicationLabels.labels | list | `[]` | Additional labels |
 | controller.metrics.enabled | bool | `false` | Deploy metrics service |
+| controller.metrics.rules.additionalLabels | object | `{}` | PrometheusRule labels |
+| controller.metrics.rules.annotations | object | `{}` | PrometheusRule annotations |
 | controller.metrics.rules.enabled | bool | `false` | Deploy a PrometheusRule for the application controller |
+| controller.metrics.rules.namespace | string | `""` | PrometheusRule namespace |
+| controller.metrics.rules.selector | object | `{}` | PrometheusRule selector |
 | controller.metrics.rules.spec | list | `[]` | PrometheusRule.Spec for the application controller |
 | controller.metrics.service.annotations | object | `{}` | Metrics service annotations |
 | controller.metrics.service.labels | object | `{}` | Metrics service labels |
@@ -900,6 +904,7 @@ server:
 | redis.envFrom | list | `[]` (See [values.yaml]) | envFrom to pass to the Redis server |
 | redis.exporter.containerSecurityContext | object | See [values.yaml] | Redis exporter security context |
 | redis.exporter.enabled | bool | `false` | Enable Prometheus redis-exporter sidecar |
+| redis.exporter.env | list | `[]` | Environment variables to pass to the Redis exporter |
 | redis.exporter.image.imagePullPolicy | string | `""` (defaults to global.image.imagePullPolicy) | Image pull policy for the redis-exporter |
 | redis.exporter.image.repository | string | `"public.ecr.aws/bitnami/redis-exporter"` | Repository to use for the redis-exporter |
 | redis.exporter.image.tag | string | `"1.45.0"` | Tag to use for the redis-exporter |
diff --git a/charts/argo-cd/templates/_helpers.tpl b/charts/argo-cd/templates/_helpers.tpl
index 377a07e1..2338d1c0 100644
--- a/charts/argo-cd/templates/_helpers.tpl
+++ b/charts/argo-cd/templates/_helpers.tpl
@@ -174,7 +174,10 @@ Merge Argo Configuration with Preset Configuration
 {{- $config := (mergeOverwrite (deepCopy (omit .Values.configs.cm "create" "annotations")) (.Values.server.config | default dict))  -}}
 {{- $preset := include "argo-cd.config.cm.presets" . | fromYaml | default dict -}}
 {{- range $key, $value := mergeOverwrite $preset $config }}
-{{ $key }}: {{ toString $value | toYaml }}
+{{- $fmted := $value | toString }}
+{{- if not (eq $fmted "") }}
+{{ $key }}: {{ $fmted | toYaml }}
+{{- end }}
 {{- end }}
 {{- end -}}
 
diff --git a/charts/argo-cd/templates/redis/deployment.yaml b/charts/argo-cd/templates/redis/deployment.yaml
index 389cf678..3376d732 100755
--- a/charts/argo-cd/templates/redis/deployment.yaml
+++ b/charts/argo-cd/templates/redis/deployment.yaml
@@ -89,6 +89,9 @@ spec:
           value: {{ printf "redis://localhost:%v" .Values.redis.containerPorts.redis }}
         - name: REDIS_EXPORTER_WEB_LISTEN_ADDRESS
           value: {{ printf "0.0.0.0:%v" .Values.redis.containerPorts.metrics }}
+        {{- with .Values.redis.exporter.env }}
+          {{- toYaml . | nindent 8 }}
+        {{- end }}
         ports:
         - name: metrics
           containerPort: {{ .Values.redis.containerPorts.metrics }}
diff --git a/charts/argo-cd/values.yaml b/charts/argo-cd/values.yaml
index e31379a3..2f5f6020 100755
--- a/charts/argo-cd/values.yaml
+++ b/charts/argo-cd/values.yaml
@@ -779,6 +779,17 @@ controller:
     rules:
       # -- Deploy a PrometheusRule for the application controller
       enabled: false
+      # -- PrometheusRule namespace
+      namespace: "" # "monitoring"
+      # -- PrometheusRule selector
+      selector: {}
+        # prometheus: kube-prometheus
+
+      # -- PrometheusRule labels
+      additionalLabels: {}
+      # -- PrometheusRule annotations
+      annotations: {}
+
       # -- PrometheusRule.Spec for the application controller
       spec: []
       # - alert: ArgoAppMissing
@@ -805,11 +816,6 @@ controller:
       #       The application [{{`{{$labels.name}}`}} has not been synchronized for over
       #       12 hours which means that the state of this cloud has drifted away from the
       #       state inside Git.
-    #   selector:
-    #     prometheus: kube-prometheus
-    #   namespace: monitoring
-    #   additionalLabels: {}
-    #   annotations: {}
 
   ## Enable this and set the rules: to whatever custom rules you want for the Cluster Role resource.
   ## Defaults to off
@@ -1105,6 +1111,8 @@ redis:
   exporter:
     # -- Enable Prometheus redis-exporter sidecar
     enabled: false
+    # -- Environment variables to pass to the Redis exporter
+    env: []
     ## Prometheus redis-exporter image
     image:
       # -- Repository to use for the redis-exporter