diff --git a/ci/helm-chart/templates/deployment.yaml b/ci/helm-chart/templates/deployment.yaml
index 12a944116..2beb8c1b5 100644
--- a/ci/helm-chart/templates/deployment.yaml
+++ b/ci/helm-chart/templates/deployment.yaml
@@ -102,6 +102,7 @@ spec:
           {{- range .Values.extraSecretMounts }}
           - name: {{ .name }}
             mountPath: {{ .mountPath }}
+            subPath: {{ .subPath | default "" }}
             readOnly: {{ .readOnly }}
           {{- end }}
           {{- range .Values.extraVolumeMounts }}
diff --git a/ci/helm-chart/values.yaml b/ci/helm-chart/values.yaml
index 0d3004242..3abe531a3 100644
--- a/ci/helm-chart/values.yaml
+++ b/ci/helm-chart/values.yaml
@@ -179,6 +179,7 @@ extraInitContainers: |
 extraSecretMounts: []
   # - name: secret-files
   #   mountPath: /etc/secrets
+  #   subPath: private.key # (optional)
   #   secretName: code-server-secret-files
   #   readOnly: true