diff --git a/defaults/main.yaml b/defaults/main.yaml
index 014d2bd..105e965 100644
--- a/defaults/main.yaml
+++ b/defaults/main.yaml
@@ -1,4 +1,4 @@
-postgresql_version: "16.3"
+postgresql_version: "16.4"
 
 # Options
 postgresql_install_official_repo: true
diff --git a/tasks/RedHat/config.yaml b/tasks/RedHat/config.yaml
index e2bc223..6048cb6 100644
--- a/tasks/RedHat/config.yaml
+++ b/tasks/RedHat/config.yaml
@@ -27,6 +27,7 @@
         mode: 0600
         owner: "{{ postgresql_user }}"
         group: "{{ postgresql_group }}"
+        backup: yes
       register: pg_hba_config_file
       notify:
         - Reload PostgreSQL
@@ -38,6 +39,7 @@
         mode: 0600
         owner: "{{ postgresql_user }}"
         group: "{{ postgresql_group }}"
+        backup: yes
       register: postgresql_config_file
       notify:
         - Reload PostgreSQL
@@ -49,6 +51,7 @@
         mode: 0600
         owner: "{{ postgresql_user }}"
         group: "{{ postgresql_group }}"
+        backup: yes
       register: postgresql_ssl_config_file
       notify:
         - Reload PostgreSQL