diff --git a/roles/common/defaults/main.yml b/roles/common/defaults/main.yml
index cb9d475..5d8e9bf 100644
--- a/roles/common/defaults/main.yml
+++ b/roles/common/defaults/main.yml
@@ -105,7 +105,7 @@ system_tz: 'Europe/Paris'
 # system_tuned_profile: enterprise-storage
 
 # Frquency of the fstrim cron job. Can be daily, weekly or monthly
-system_fstrim_freq: daily
+system_fstrim_freq: weekly
 
 system_base_bash_aliases:
   ls: 'ls $LS_OPTIONS'
diff --git a/roles/system_proxy/tasks/main.yml b/roles/system_proxy/tasks/main.yml
index c9f37ff..9e572fd 100644
--- a/roles/system_proxy/tasks/main.yml
+++ b/roles/system_proxy/tasks/main.yml
@@ -51,4 +51,22 @@
   when: ansible_os_family == 'RedHat'
   tags: proxy
 
-# TODO: equivalent for apt
+- name: Config proxy for apt
+  copy:
+    content: |
+      Acquire::http::Proxy "{{ system_proxy }}";
+      Acquire::https::Proxy "{{ system_proxy }}";
+    dest: /etc/apt/apt.conf.d/10proxy
+  when:
+    - ansible_os_family == 'Debian'
+    - system_proxy is defined
+    - system_proxy != ''
+  tags: proxy
+
+- name: Remove proxy from apt config
+  file: path=/etc/apt/apt.conf.d/10proxy state=absent
+  when:
+    - ansible_os_family == 'Debian'
+    - system_proxy is not defined or system_proxy == ''
+  tags: proxy
+
diff --git a/roles/wapt_server/tasks/main.yml b/roles/wapt_server/tasks/main.yml
index af9ee68..379799a 100644
--- a/roles/wapt_server/tasks/main.yml
+++ b/roles/wapt_server/tasks/main.yml
@@ -5,7 +5,7 @@
     name:
       - tis-waptserver
       - tis-waptsetup
-      - postgresql11
+      - postgresql12
       - python-psycopg2 # Needed to manage PG with ansible
   tags: wapt