diff --git a/charts/radar-rest-sources-backend/Chart.yaml b/charts/radar-rest-sources-backend/Chart.yaml
index ffc73399..6dba7ad7 100644
--- a/charts/radar-rest-sources-backend/Chart.yaml
+++ b/charts/radar-rest-sources-backend/Chart.yaml
@@ -2,7 +2,7 @@ apiVersion: v2
 appVersion: "4.4.4"
 description: A Helm chart for the backend application of RADAR-base Rest Sources Authorizer
 name: radar-rest-sources-backend
-version: 1.2.1
+version: 1.2.2
 icon: "http://radar-base.org/wp-content/uploads/2022/09/Logo_RADAR-Base-RGB.png"
 sources:
 - https://github.com/RADAR-base/radar-helm-charts/tree/main/charts/radar-rest-sources-backend
diff --git a/charts/radar-rest-sources-backend/README.md b/charts/radar-rest-sources-backend/README.md
index 36eea3ee..78520a44 100644
--- a/charts/radar-rest-sources-backend/README.md
+++ b/charts/radar-rest-sources-backend/README.md
@@ -3,7 +3,7 @@
 # radar-rest-sources-backend
 [![Artifact HUB](https://img.shields.io/endpoint?url=https://artifacthub.io/badge/repository/radar-rest-sources-backend)](https://artifacthub.io/packages/helm/radar-base/radar-rest-sources-backend)
 
-![Version: 1.2.1](https://img.shields.io/badge/Version-1.2.1-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 4.4.4](https://img.shields.io/badge/AppVersion-4.4.4-informational?style=flat-square)
+![Version: 1.2.2](https://img.shields.io/badge/Version-1.2.2-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 4.4.4](https://img.shields.io/badge/AppVersion-4.4.4-informational?style=flat-square)
 
 A Helm chart for the backend application of RADAR-base Rest Sources Authorizer
 
@@ -85,6 +85,8 @@ A Helm chart for the backend application of RADAR-base Rest Sources Authorizer
 | serverName | string | `"localhost"` | Resolvable server name, needed to find the advertised URL and callback URL |
 | managementportal_url | string | `"http://management-portal:8080/managementportal"` | URL of the Management Portal |
 | client_secret | string | `"secret"` | OAuth2 client secret of the radar-rest-sources-backend client from Management Portal |
+| public_key_endpoints | list | `[]` | List of public key endpoints for token verification |
+| auth_url | string | `"http://management-portal:8080/managementportal/oauth/token"` | Auth url for MP client |
 | restSourceClients.fitbit.enable | bool | `false` | set to true, if Fitbit client should be used |
 | restSourceClients.fitbit.sourceType | string | `"FitBit"` | Type of the data sources |
 | restSourceClients.fitbit.authorizationEndpoint | string | `"https://www.fitbit.com/oauth2/authorize"` | Authorization endpoint for Fitbit authentication and authorization |
diff --git a/charts/radar-rest-sources-backend/templates/configmap.yaml b/charts/radar-rest-sources-backend/templates/configmap.yaml
index 746c973a..010eee27 100644
--- a/charts/radar-rest-sources-backend/templates/configmap.yaml
+++ b/charts/radar-rest-sources-backend/templates/configmap.yaml
@@ -20,10 +20,17 @@ data:
     auth:
       # Management Portal URL
       managementPortalUrl: {{ .Values.managementportal_url }}
+      # OAuth2 Auth URL for MP Client
+      authUrl: {{ .Values.auth_url }}
       # OAuth2 Client id of rest sources authorizer backend
       clientId: radar_rest_sources_auth_backend
       # OAuth2 Client Secret of rest sources authorizer backend client
       clientSecret: {{ .Values.client_secret }}
+      # List of public key endpoints for token verification
+      jwksUrls:
+        {{- range .Values.public_key_endpoints }}
+        - {{ . | quote }}
+        {{ end -}}
 
     database:
       driver: org.postgresql.Driver
diff --git a/charts/radar-rest-sources-backend/values.yaml b/charts/radar-rest-sources-backend/values.yaml
index d176fd31..c84e86ed 100644
--- a/charts/radar-rest-sources-backend/values.yaml
+++ b/charts/radar-rest-sources-backend/values.yaml
@@ -242,6 +242,13 @@ managementportal_url: http://management-portal:8080/managementportal
 # -- OAuth2 client secret of the radar-rest-sources-backend client from Management Portal
 client_secret: secret
 
+# -- List of public key endpoints for token verification
+public_key_endpoints: []
+  # - https://localhost/managementportal/oauth/token_key
+
+# -- Auth url for MP client
+auth_url: http://management-portal:8080/managementportal/oauth/token
+
 restSourceClients:
   fitbit:
     # -- set to true, if Fitbit client should be used