diff --git a/defaults/main.yml b/defaults/main.yml
index d0ca7ab..8a40d96 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -13,7 +13,8 @@ pg_config_min_wal_size: 256MB
 pg_config_log_filename: postgresql-%Y-%m-%d_%H%M%S.log
 pg_config_timezone: "Europe/Rome"
 pg_config_row: ""
-pg_config_shared_preload_libraries: []
+pg_config_shared_preload_libraries:
+  - pg_stat_statements
 # pg_config_row: |
 #   max_connections = 200
 #   effective_cache_size = 6GB
diff --git a/tasks/install.yml b/tasks/install.yml
index c01ff8e..6da65c0 100644
--- a/tasks/install.yml
+++ b/tasks/install.yml
@@ -47,6 +47,7 @@
     name:
       - postgresql{{postgres_version}}
       - postgresql{{postgres_version}}-server
+      - postgresql{{postgres_version}}-contrib.x86_64
     state: present
 
 - name: postgres | install | epel-release
@@ -57,4 +58,4 @@
 - name: postgres | install | install custom extension
   include_tasks: "tasks/extension/{{ item }}.yaml"
   with_items: "{{ additional_extension }}"
-  # when: additional_extension
\ No newline at end of file
+  # when: additional_extension