diff --git a/cd.sh b/cd.sh
index 9bc03b0..16a189c 100644
--- a/cd.sh
+++ b/cd.sh
@@ -309,8 +309,14 @@ deb ${CD_URL_CHOSEN}-security ${CD_OS_VERSION}-security main
             "|${CD_DEFAULT_REPO_ALMA}|${CD_URL_CHOSEN}|" \
             "|^#baseurl|baseurl|"
         ;;
-        # TODO
         "${CD_OS_UBUNTU}")
+            file="/etc/apt/sources.list"
+            cd_write "${file}" "\
+deb ${CD_URL_CHOSEN} ${CD_OS_VERSION} main
+deb ${CD_URL_CHOSEN} ${CD_OS_VERSION}-backports main
+deb ${CD_URL_CHOSEN} ${CD_OS_VERSION}-updates main
+deb ${CD_URL_CHOSEN} ${CD_OS_VERSION}-security main
+"
         ;;
     esac
 }