diff --git a/roles/bootstrap/tasks/ubuntu.yml b/roles/bootstrap/tasks/ubuntu.yml
index f0316c2..0a78720 100644
--- a/roles/bootstrap/tasks/ubuntu.yml
+++ b/roles/bootstrap/tasks/ubuntu.yml
@@ -51,9 +51,10 @@
       changed_when: bootstrap_ubuntu_base_result.rc == 0
 
     - name: Enable universe repository
-      ansible.builtin.command: "{{ chroot_command }} sed -i '1s|$| universe|' /etc/apt/sources.list"
-      register: bootstrap_ubuntu_repo_result
-      changed_when: bootstrap_ubuntu_repo_result.rc == 0
+      ansible.builtin.replace:
+        path: /mnt/etc/apt/sources.list
+        regexp: '^(deb\s+\S+\s+\S+\s+main)$'
+        replace: '\1 universe'
 
     - name: Update package lists
       ansible.builtin.command: "{{ chroot_command }} apt update"