diff --git a/roles/installer/templates/postgres.yaml.j2 b/roles/installer/templates/postgres.yaml.j2
index bf2e018a..f87c8420 100644
--- a/roles/installer/templates/postgres.yaml.j2
+++ b/roles/installer/templates/postgres.yaml.j2
@@ -56,6 +56,8 @@ spec:
         - image: '{{ postgres_image }}:{{ postgres_image_version }}'
           imagePullPolicy: '{{ image_pull_policy }}'
           name: postgres
+          securityContext:
+            fsGroup: 999
           env:
             # For postgres_image based on rhel8/postgresql-12
             - name: POSTGRESQL_DATABASE