diff --git a/postgresql/values.yaml b/postgresql/values.yaml
index 16791d6c0..0cd221b57 100644
--- a/postgresql/values.yaml
+++ b/postgresql/values.yaml
@@ -256,8 +256,11 @@ conf:
   debug: false
   pg_hba: |
     host all all 127.0.0.1/32 trust
-    host all all 0.0.0.0/0 md5
+    host all postgresql-admin 0.0.0.0/0 md5
+    host all postgres 0.0.0.0/0 md5
+    host all psql_exporter 0.0.0.0/0 md5
     local all all trust
+    host all all 0.0.0.0/0 reject
 
   postgresql:
     archive_mode: 'off'