diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0dcd548..01017f9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,9 +1,10 @@
-## v1.X
+## v1.0.1
 
 ### Fix
 * Set empty dependencies line to fix Galaxy warning.
+* Use to_nice_json to manage packages list.
 
-## v1.0
+## v1.0.0
 
 ### Features
 * Install Arpwatch.
diff --git a/handlers/main.yml b/handlers/main.yml
index 1af3bea..163d6e3 100644
--- a/handlers/main.yml
+++ b/handlers/main.yml
@@ -7,4 +7,3 @@
                             (arpwatch__service_manage | d(True) | bool))
           else "stopped" }}'
     enabled: '{{ arpwatch__service_manage | d(True) | bool }}'
-
diff --git a/tasks/main.yml b/tasks/main.yml
index f961a62..d7085c1 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -10,7 +10,7 @@
     state: 'present'
     install_recommends: False
   with_flattened:
-    - '{{ arpwatch__base_packages }}'
+    - '{{ arpwatch__base_packages | to_nice_json }}'
   when: arpwatch__enabled|bool
 
 # Manage configuration file [[[1
@@ -47,4 +47,3 @@
           else "stopped" }}'
     enabled: '{{ ((arpwatch__enabled | d(True) | bool) and
                   (arpwatch__service_manage | d(True) | bool)) }}'
-