diff --git a/roles/mastodon/tasks/system_setup/prepare_database.yml b/roles/mastodon/tasks/system_setup/prepare_database.yml
index 84b0901..c5bf567 100644
--- a/roles/mastodon/tasks/system_setup/prepare_database.yml
+++ b/roles/mastodon/tasks/system_setup/prepare_database.yml
@@ -34,6 +34,8 @@
     name: "{{ mastodon_db }}"
     login_unix_socket: "{{ mastodon_db_login_unix_socket }}"
   register: create_local_db
+  become: true
+  become_user: postgres
   when: create_remote_db is skipped
 
 - name: mastodon | postgres | Create database user {{ mastodon_db_user }}
@@ -44,4 +46,6 @@
     encrypted: yes
     login_unix_socket: "{{ mastodon_db_login_unix_socket }}"
     role_attr_flags: CREATEDB
+  become: true
+  become_user: postgres
   when: create_remote_db_user is skipped
\ No newline at end of file