diff --git a/helm_deploy/values-preprod.yaml b/helm_deploy/values-preprod.yaml
index 936035f6..e2b296cb 100644
--- a/helm_deploy/values-preprod.yaml
+++ b/helm_deploy/values-preprod.yaml
@@ -17,7 +17,7 @@ ingress:
 
 env:
   NOMIS_AUTH_URL: https://sign-in-preprod.hmpps.service.justice.gov.uk/auth
-  PRISON_API_URL: "https://api-preprod.prison.service.justice.gov.uk"
+  PRISON_API_URL: "https://prison-api-preprod.prison.service.justice.gov.uk"
   PRISONER_SEARCH_API_URL: https://prisoner-search-preprod.prison.service.justice.gov.uk
   EXIT_LOCATION_URL: https://digital-preprod.prison.service.justice.gov.uk/
   EMAIL_LOCATION_URL: https://preprod.use-of-force.service.justice.gov.uk