diff --git a/config/projects-prod/htan-project.yaml b/config/projects-prod/htan-project.yaml
index 65b0b9b..7577662 100644
--- a/config/projects-prod/htan-project.yaml
+++ b/config/projects-prod/htan-project.yaml
@@ -17,6 +17,10 @@ parameters:
     - 'arn:aws:sts::888810830951:assumed-role/AWSReservedSSO_Administrator_bf3b4691e22cc3c6/adam.taylor@sagebase.org' # Provides for htan-dev cross-account access
     - 'arn:aws:sts::526515999252:assumed-role/AWSReservedSSO_S3ExternalCollab_40c062f682e7f3f5/adam.taylor@sagebase.org' # Provides access to HTAN buckets in SciComp
     - "arn:aws:iam::426577889437:user/darya.pozhidayeva.admin"
+    # The following roles don't exist since the users are not Sage employees.
+    # However, this will ensure that they are added to the Tower workspace
+    # until we find a permanent solution for listing external users.
+    - '{{stack_group_config.tower_viewer_arn_prefix}}/dpozhida@systemsbiology.org'
   AllowSynapseIndexing: Enabled
   AccountAdminArns:
     - '{{stack_group_config.sso_admin_role.arn}}'
diff --git a/templates/nextflow-tower-config-bucket.yaml b/templates/nextflow-tower-config-bucket.yaml
index 43893c4..71e1731 100644
--- a/templates/nextflow-tower-config-bucket.yaml
+++ b/templates/nextflow-tower-config-bucket.yaml
@@ -75,6 +75,7 @@ Resources:
             - "steven_vensko@med.unc.edu"
             - "clarence@hms.harvard.edu"
             - "Jeremy_Muhlich@hms.harvard.edu"
+            - "dpozhida@systemsbiology.org"
           scm:
             providers:
               github: