diff --git a/charts/actions-runner-controller/templates/deployment.yaml b/charts/actions-runner-controller/templates/deployment.yaml
index 55a9f601..522d835b 100644
--- a/charts/actions-runner-controller/templates/deployment.yaml
+++ b/charts/actions-runner-controller/templates/deployment.yaml
@@ -118,10 +118,14 @@ spec:
               name: {{ include "actions-runner-controller.secretName" . }}
               optional: true
         {{- end }}
+        {{- if kindIs "slice" .Values.env }}
+        {{- toYaml .Values.env | nindent 8 }}
+        {{- else }}
         {{- range $key, $val := .Values.env }}
         - name: {{ $key }}
           value: {{ $val | quote }}
         {{- end }}
+        {{- end }}
         image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default (cat "v" .Chart.AppVersion | replace " " "") }}"
         name: manager
         imagePullPolicy: {{ .Values.image.pullPolicy }}
diff --git a/charts/actions-runner-controller/values.yaml b/charts/actions-runner-controller/values.yaml
index d3083d5f..0323f501 100644
--- a/charts/actions-runner-controller/values.yaml
+++ b/charts/actions-runner-controller/values.yaml
@@ -149,10 +149,21 @@ priorityClassName: ""
 
 env:
   {}
+  # specify additional environment variables for the controller pod.
+  # It's possible to specify either key vale pairs e.g.:
   # http_proxy: "proxy.com:8080"
   # https_proxy: "proxy.com:8080"
   # no_proxy: ""
 
+  # or a list of complete environment variable definitions e.g.:
+  # - name: GITHUB_APP_INSTALLATION_ID
+  #   valueFrom:
+  #     secretKeyRef:
+  #       key: some_key_in_the_secret
+  #       name: some-secret-name
+  #       optional: true
+
+
 ## specify additional volumes to mount in the manager container, this can be used
 ## to specify additional storage of material or to inject files from ConfigMaps
 ## into the running container