diff --git a/infra/app/templates/_helpers.tpl b/infra/app/templates/_helpers.tpl
index 16da38ded..9fd3683d1 100644
--- a/infra/app/templates/_helpers.tpl
+++ b/infra/app/templates/_helpers.tpl
@@ -12,13 +12,11 @@ Labels applied to all resources.
 helm.sh/chart: {{ include "bt-app.chart" . }}
 app.kubernetes.io/managed-by: {{ .Release.Service }}
 app.kubernetes.io/instance: {{ .Release.Name }}
-
 {{/*
-forces a rolling update when the value is changed. necessary since
+the timestamp label forces a rolling update when the value is changed. necessary since
 we do not change the chart or image version when deploying.
 */}}
-timestamp: {{ date "2006-01-02 15:04:05Z" (now) | quote }}
-
+timestamp: {{ date "2006-01-02_15.04.05Z" (now) | quote }}
 env: {{ .Values.env }}
 {{- end -}}