diff --git a/nebius/iam/v1/federated_credentials.proto b/nebius/iam/v1/federated_credentials.proto
index 6acc156..c5105be 100644
--- a/nebius/iam/v1/federated_credentials.proto
+++ b/nebius/iam/v1/federated_credentials.proto
@@ -28,7 +28,7 @@ message FederatedCredentialsSpec {
   }
 
   // Federated subject ID.For oidc_provider subject will be calculated based on the “sub” claim of the JWT federation token.
-  string federated_subject_id = 101 [(buf.validate.field).required = true];
+  string federated_subject_id = 101;
 
   // IAM subject, in which federated subject will be impersonated to. E.g. for workload identities it will be IAM service account.
   string subject_id = 111 [(buf.validate.field).required = true];