diff --git a/docker-compose/docker-compose.yaml b/docker-compose/docker-compose.yaml
index 6febd829d..f0fb810ac 100644
--- a/docker-compose/docker-compose.yaml
+++ b/docker-compose/docker-compose.yaml
@@ -443,6 +443,7 @@ services:
     mem_limit: '8g'
     security_opt:
       - no-new-privileges:true
+    read_only: true
     volumes:
       - 'prometheus-v2:/prometheus'
       - '../prometheus:/sg_prometheus_add_ons'