diff --git a/templates/deployment.yaml b/templates/deployment.yaml
index 21cb484..abbdebd 100644
--- a/templates/deployment.yaml
+++ b/templates/deployment.yaml
@@ -41,6 +41,10 @@ spec:
       {{- if .Values.terminationGracePeriodSeconds }}
       terminationGracePeriodSeconds: {{ .Values.terminationGracePeriodSeconds }}
       {{- end }}
+      {{- with .Values.extraInitContainers }}
+      initContainers:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
       containers:
         - name: pgdog
           {{- if .Values.image.name }}
@@ -94,6 +98,9 @@ spec:
               mountPath: /etc/pgdog
             - name: users
               mountPath: /etc/secrets/pgdog
+            {{- with .Values.extraVolumeMounts }}
+            {{- toYaml . | nindent 12 }}
+            {{- end }}
         {{- if .Values.prometheusPort }}
         - name: prom
           image: prom/prometheus
@@ -151,6 +158,9 @@ spec:
         - name: prom
           configMap:
             name: {{ include "pgdog.fullname" . }}-prom
+        {{- with .Values.extraVolumes }}
+        {{- toYaml . | nindent 8 }}
+        {{- end }}
       {{- with .Values.nodeSelector }}
       nodeSelector:
         {{- toYaml . | nindent 8 }}
diff --git a/values.yaml b/values.yaml
index 9c28e9d..a4dea3a 100644
--- a/values.yaml
+++ b/values.yaml
@@ -68,6 +68,35 @@ statefulSet:
   # enabled switches from Deployment to StatefulSet
   enabled: false
 
+# Extra customization for advanced use cases
+# extraInitContainers allows adding custom init containers that run before the main pgdog container
+# Init containers are useful for setup tasks like downloading certificates, waiting for dependencies, etc.
+# Example:
+# extraInitContainers:
+#   - name: init-ca
+#     image: busybox
+#     command: ['sh', '-c', 'wget -O /pki/ca-bundle.pem https://truststore.example.com/ca-bundle.pem']
+#     volumeMounts:
+#       - name: pki
+#         mountPath: /pki
+extraInitContainers: []
+
+# extraVolumes allows adding custom volumes to the pod
+# These volumes can be referenced by extraVolumeMounts or extraInitContainers
+# Example:
+# extraVolumes:
+#   - name: pki
+#     emptyDir: {}
+extraVolumes: []
+
+# extraVolumeMounts allows adding custom volume mounts to the main pgdog container
+# The volumes must be defined in extraVolumes
+# Example:
+# extraVolumeMounts:
+#   - name: pki
+#     mountPath: /pki
+extraVolumeMounts: []
+
 # resources define resource requests and limits for the pgdog container
 # Note: requests and limits are set to the same values for Guaranteed QoS
 # Ratio: 1GB memory per 1 CPU (1000m CPU = 1Gi memory)