diff --git a/README.md b/README.md
index 4a802c3..022e6d2 100644
--- a/README.md
+++ b/README.md
@@ -236,4 +236,5 @@ Here is a list of additional OWSDK microservices
 | OWFMS | Firmware Management Service | [here](https://github.com/Telecominfraproject/wlan-cloud-ucentralfms) | [here](https://github.com/Telecominfraproject/wlan-cloud-ucentralfms/blob/main/openapi/owfms.yaml) |
 | OWPROV | Provisioning Service | [here](https://github.com/Telecominfraproject/wlan-cloud-owprov) | [here](https://github.com/Telecominfraproject/wlan-cloud-owprov/blob/main/openapi/owprov.yaml) |
 | OWANALYTICS | Analytics Service | [here](https://github.com/Telecominfraproject/wlan-cloud-analytics) | [here](https://github.com/Telecominfraproject/wlan-cloud-analytics/blob/main/openapi/owanalytics.yaml) |
+| OWSUB | Subscriber Service | [here](https://github.com/Telecominfraproject/wlan-cloud-userportal) | [here](https://github.com/Telecominfraproject/wlan-cloud-userportal/blob/main/openapi/userportal.yaml) |