diff --git a/cd.sh b/cd.sh
index 80e9ee7..8348ba5 100644
--- a/cd.sh
+++ b/cd.sh
@@ -7,6 +7,8 @@ CD_DEFAULT_DNS="\
 CD_DEFAULT_REPO_ALMA="https://repo.almalinux.org/almalinux"
 CD_DEFAULT_REPO_ALPINE="https://dl-cdn.alpinelinux.org/alpine"
 CD_DEFAULT_REPO_DEBIAN="https://deb.debian.org/debian"
+CD_DEFAULT_REPO_ROCKY="http://dl.rockylinux.org/\$contentdir"
+CD_DEFAULT_REPO_UBUNTU="http://archive.ubuntu.com/ubuntu"
 
 CD_PYTHON_MODULES="\
 cd \
@@ -66,6 +68,8 @@ cd_set_environment_variables () {
     CD_PKG_GIT="git"
     # common
     case "${CD_OS_ID}" in
+        "${CD_OS_ALMA}"|"${CD_OS_ROCKY}")
+        ;;
     esac
     #
     case "${CD_OS_ID}" in
@@ -505,6 +509,8 @@ CD_ERROR_OS=1
 CD_OS_ALMA="alma"
 CD_OS_ALPINE="alpine"
 CD_OS_DEBIAN="debian"
+CD_OS_ROCKY="rocky"
+CD_OS_UBUNTU="ubuntu"
 
 # run
 cd_main