diff --git a/charts/nfs-subdir-external-provisioner/templates/_helpers.tpl b/charts/nfs-subdir-external-provisioner/templates/_helpers.tpl
index c6c4f79f..b8942aa1 100644
--- a/charts/nfs-subdir-external-provisioner/templates/_helpers.tpl
+++ b/charts/nfs-subdir-external-provisioner/templates/_helpers.tpl
@@ -90,3 +90,16 @@ Selector labels
 app: {{ template "nfs-subdir-external-provisioner.name" . }}
 release: {{ .Release.Name }}
 {{- end }}
+
+{{/*
+Renders a value that contains template.
+Usage:
+{{ include "common.tplvalues.render" ( dict "value" .Values.path.to.the.Value "context" $) }}
+*/}}
+{{- define "common.tplvalues.render" -}}
+    {{- if typeIs "string" .value }}
+        {{- tpl .value .context }}
+    {{- else }}
+        {{- tpl (.value | toYaml) .context }}
+    {{- end }}
+{{- end -}}
\ No newline at end of file
diff --git a/charts/nfs-subdir-external-provisioner/templates/deployment.yaml b/charts/nfs-subdir-external-provisioner/templates/deployment.yaml
index 15a574b2..1cd02dfd 100644
--- a/charts/nfs-subdir-external-provisioner/templates/deployment.yaml
+++ b/charts/nfs-subdir-external-provisioner/templates/deployment.yaml
@@ -50,6 +50,9 @@ spec:
           volumeMounts:
             - name: {{ .Values.nfs.volumeName }}
               mountPath: /persistentvolumes
+          {{- if .Values.extraVolumeMounts }}
+          {{- include "common.tplvalues.render" (dict "value" .Values.extraVolumeMounts "context" $) | nindent 12 }}
+          {{- end }}
           env:
             - name: PROVISIONER_NAME
               value: {{ template "nfs-subdir-external-provisioner.provisionerName" . }}
@@ -61,10 +64,16 @@ spec:
             - name: ENABLE_LEADER_ELECTION
               value: "false"
             {{- end }}
+          {{- if .Values.extraEnvVars }}
+          {{- include "common.tplvalues.render" (dict "value" .Values.extraEnvVars "context" $) | nindent 12 }}
+          {{- end }}
           {{- with .Values.resources }}
           resources:
 {{ toYaml . | indent 12 }}
           {{- end }}
+      {{- if .Values.extraContainers }}
+      {{- include "common.tplvalues.render" (dict "value" .Values.extraContainers "context" $) | nindent 8 }}
+      {{- end }}
       volumes:
         - name: {{ .Values.nfs.volumeName }}
 {{- if .Values.buildMode }}
@@ -77,6 +86,9 @@ spec:
             server: {{ .Values.nfs.server }}
             path: {{ .Values.nfs.path }}
 {{- end }}
+      {{- if .Values.extraVolumes }}
+      {{- include "common.tplvalues.render" (dict "value" .Values.extraVolumes "context" $) | nindent 8 }}
+      {{- end }}
       {{- if and (.Values.tolerations) (semverCompare "^1.6-0" .Capabilities.KubeVersion.GitVersion) }}
       tolerations:
 {{ toYaml .Values.tolerations | indent 6 }}
diff --git a/charts/nfs-subdir-external-provisioner/values.yaml b/charts/nfs-subdir-external-provisioner/values.yaml
index f6260238..b4ecbcda 100644
--- a/charts/nfs-subdir-external-provisioner/values.yaml
+++ b/charts/nfs-subdir-external-provisioner/values.yaml
@@ -66,6 +66,18 @@ rbac:
   # Specifies whether RBAC resources should be created
   create: true
 
+# Additional sidecars
+extraContainers: {}
+
+# Additional env vars
+extraEnvVars: {}
+
+# Additional volumes
+extraVolumes: {}
+
+# Additional volume mounts
+extraVolumeMounts: {}
+
 # If true, create & use Pod Security Policy resources
 # https://kubernetes.io/docs/concepts/policy/pod-security-policy/
 podSecurityPolicy: