diff --git a/doi/helm/Chart.yaml b/doi/helm/Chart.yaml
index 9b9898b..7244335 100644
--- a/doi/helm/Chart.yaml
+++ b/doi/helm/Chart.yaml
@@ -8,6 +8,6 @@ maintainers:
 
 type: application
 
-version: 0.1.0
+version: 0.1.1
 
 appVersion: "1.2.0"
diff --git a/doi/helm/config/doi.properties b/doi/helm/config/doi.properties
index 9e80fa8..7a12ca5 100644
--- a/doi/helm/config/doi.properties
+++ b/doi/helm/config/doi.properties
@@ -1,9 +1,11 @@
 ca.nrc.cadc.doi.vospaceParentUri = {{ .Values.application.config.vospaceParentUri | required ".Values.application.config.vospaceParentUri is required" }}
 ca.nrc.cadc.doi.metaDataPrefix = {{ .Values.application.config.metaDataPrefix | required ".Values.application.config.metaDataPrefix is required" }}
-ca.nrc.cadc.doi.groupPrefix = {{ .Values.application.config.groupPrefix | required ".Values.application.config.groupPrefix is required" }}
 ca.nrc.cadc.doi.landingUrl = {{ .Values.application.config.landingUrl | required ".Values.application.config.landingUrl is required" }}
 ca.nrc.cadc.doi.datacite.mdsUrl = {{ .Values.application.config.mdsUrl | required ".Values.application.config.mdsUrl is required" }}
 ca.nrc.cadc.doi.datacite.accountPrefix = {{ .Values.application.config.accountPrefix | required ".Values.application.config.accountPrefix is required" }}
+{{- with .Values.application.config.groupPrefix }}
+ca.nrc.cadc.doi.groupPrefix = {{ . }}
+{{- end }}
 {{- with .Values.application.config.doiIdentifierPrefix }}
 ca.nrc.cadc.doi.doiIdentifierPrefix = {{ . }}
 {{- end }}
diff --git a/doi/helm/examples/values.example.yaml b/doi/helm/examples/values.example.yaml
index 4deb5e5..480344b 100644
--- a/doi/helm/examples/values.example.yaml
+++ b/doi/helm/examples/values.example.yaml
@@ -18,10 +18,11 @@ application:
   config:
     vospaceParentUri: vos://example.org~arc/doi
     metaDataPrefix: doi
-    groupPrefix: doi
     landingUrl: https://doi.example.org/doi
     mdsUrl: https://mds.datacite.org
     accountPrefix: "10.5072"
+    # Optional:
+    # groupPrefix: doi
 
   datacite:
     auth:
diff --git a/doi/helm/values.yaml b/doi/helm/values.yaml
index 4b0a835..89e528f 100644
--- a/doi/helm/values.yaml
+++ b/doi/helm/values.yaml
@@ -45,9 +45,6 @@ application:
     # Prefix prepended to the DOI name for metadata stored in VOSpace.
     metaDataPrefix: "doi"
 
-    # Prefix prepended to the DOI name to create the backing GMS group name.
-    groupPrefix: "doi"
-
     # DOI landing page URL.
     landingUrl: "https://example.org/doi"
 
@@ -57,6 +54,9 @@ application:
     # Registered prefix for the DataCite account.
     accountPrefix: ""
 
+    # Optional prefix prepended to the DOI name to create the backing GMS group name.
+    groupPrefix: ""
+
     # Optional DOI identifier prefix.
     doiIdentifierPrefix: ""