diff --git a/tests/templates/kuttl/opensearch-dashboards/10-install-opensearch.yaml.j2 b/tests/templates/kuttl/opensearch-dashboards/10-install-opensearch.yaml.j2
index a34f1cb..f0e99a0 100644
--- a/tests/templates/kuttl/opensearch-dashboards/10-install-opensearch.yaml.j2
+++ b/tests/templates/kuttl/opensearch-dashboards/10-install-opensearch.yaml.j2
@@ -72,6 +72,7 @@ spec:
           - name: security-config
             secret:
               secretName: opensearch-security-config
+              defaultMode: 0o660
           - name: tls
             ephemeral:
               volumeClaimTemplate: