diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9706638..5ebcce7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,15 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 Which is based on [Keep A Changelog](http://keepachangelog.com/)
 
 ## [Unreleased]
+
+### Added
+
 - feat: add bsd-mailx package
 
-## [v1.0.0] - 2019-03-07
+### Changed
+
+- chore: use FQCN for module name
+
+## v1.0.0 - 2019-03-07
+
 - first version
diff --git a/handlers/main.yml b/handlers/main.yml
index b1b6f82..ce984dc 100644
--- a/handlers/main.yml
+++ b/handlers/main.yml
@@ -1,5 +1,5 @@
 ---
 - name: reload postfix
-  systemd:
+  ansible.builtin.service:
     name: postfix
     state: reloaded
diff --git a/tasks/main.yml b/tasks/main.yml
index 58aaa6d..27f45bc 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -1,15 +1,13 @@
 ---
 - name: install packages
-  apt:
-    name: '{{ packages }}'
-  vars:
-    packages:
+  ansible.builtin.package:
+    name:
       - postfix
       - bsd-mailx
   tags: postfix
 
 - name: copy file configuration
-  template:
+  ansible.builtin.template:
     src: main.cf.j2
     dest: /etc/postfix/main.cf
     owner: root
@@ -19,7 +17,7 @@
   tags: postfix
 
 - name: enable and start service
-  systemd:
+  ansible.builtin.service:
     name: postfix
     enabled: yes
     state: started