diff --git a/charts/argo/Chart.yaml b/charts/argo/Chart.yaml
index 694a9c9d..6d985fbf 100644
--- a/charts/argo/Chart.yaml
+++ b/charts/argo/Chart.yaml
@@ -2,7 +2,7 @@ apiVersion: v1
 appVersion: "v2.4.3"
 description: A Helm chart for Argo Workflows
 name: argo
-version: 0.6.5
+version: 0.6.6
 icon: https://raw.githubusercontent.com/argoproj/argo/master/docs/assets/argo.png
 home: https://github.com/argoproj/argo-helm
 maintainers:
diff --git a/charts/argo/templates/ui-deployment.yaml b/charts/argo/templates/ui-deployment.yaml
index 1cd416cf..36a8dba6 100644
--- a/charts/argo/templates/ui-deployment.yaml
+++ b/charts/argo/templates/ui-deployment.yaml
@@ -49,7 +49,7 @@ spec:
                 apiVersion: v1
                 fieldPath: metadata.namespace
           - name: BASE_HREF
-            value: /
+            value: {{ .Values.ui.baseHref }}
           resources:
             {{- toYaml .Values.ui.resources | nindent 12 }}
 {{- end -}}
diff --git a/charts/argo/values.yaml b/charts/argo/values.yaml
index 8ef57d6f..ebafc313 100644
--- a/charts/argo/values.yaml
+++ b/charts/argo/values.yaml
@@ -98,6 +98,8 @@ ui:
   enabled: true
   # only show workflows where UI installed
   forceNamespaceIsolation: false
+  # UI BASE_HREF env variable
+  baseHref: /
   image:
     # Overrides .images.tag if defined.
     tag: ""